# \#external-reference **URL:** https://forums.unrealengine.com/tag/external-reference/2019.md [Latest](https://forums.unrealengine.com/latest.md) · [Categories](https://forums.unrealengine.com/categories.md) · [Tags](https://forums.unrealengine.com/tags.md) --- ## [Oculus app with the ability to get mesh from external source](https://forums.unrealengine.com/t/oculus-app-with-the-ability-to-get-mesh-from-external-source/1913371)
**Author:** [@Ehsan\_Shamsi](https://forums.unrealengine.com/u/Ehsan_Shamsi)\ **Replies:** 6\ **Last updated:** [May 4, 2025, 8:43am UTC](https://forums.unrealengine.com/t/oculus-app-with-the-ability-to-get-mesh-from-external-source/1913371 "2025-05-04T08:43:03Z")
Hi there. Ok here it goes. We are developing an app for meta quest 3. The Idea is to spawn some meshes into a scene. (AR) for now, we’ve been able to set some meshes inside an AR pawn so we can easily call them via w… --- ## [Cant save map - Graph is linked to private object(s) in an external package](https://forums.unrealengine.com/t/cant-save-map-graph-is-linked-to-private-object-s-in-an-external-package/475715)
**Author:** [@MJ](https://forums.unrealengine.com/u/MJ)\ **Replies:** 2\ **Last updated:** [June 16, 2024, 3:34pm UTC](https://forums.unrealengine.com/t/cant-save-map-graph-is-linked-to-private-object-s-in-an-external-package/475715 "2024-06-16T15:34:10Z")
Message dialog closed, result: No, title: Message, text: Can’t save D:/20191126 vol vol/01 backend/01 floorplan/02 ue4/Content/Maps/volvol\_master\_c\_living.umap: Graph is linked to private object(s) in an external package… --- ## [How to get persistent level from the game blueprint?](https://forums.unrealengine.com/t/how-to-get-persistent-level-from-the-game-blueprint/279934)
**Author:** [@paradoc](https://forums.unrealengine.com/u/paradoc)\ **Replies:** 2\ **Last updated:** [April 12, 2024, 10:53am UTC](https://forums.unrealengine.com/t/how-to-get-persistent-level-from-the-game-blueprint/279934 "2024-04-12T10:53:12Z")
I can use interfaces to pass variables per: however, how would i call custom events? If I create a variable of the levelscriptActor type and cast to the persistentlevelscript, i can access the level event from the ga… --- ## [Error on duplicate map](https://forums.unrealengine.com/t/error-on-duplicate-map/427690)
**Author:** [@anonymous\_user\_5e1c08cc](https://forums.unrealengine.com/u/anonymous_user_5e1c08cc)\ **Replies:** 7\ **Last updated:** [February 14, 2023, 1:57pm UTC](https://forums.unrealengine.com/t/error-on-duplicate-map/427690 "2023-02-14T13:57:34Z")
Hi all, I simply want to duplicate a level/map. Then I get the following error message: Can't save ../../../../../../Users//Documents/Unreal Projects/XXX/Content/XXX/Maps/test/Milestone03a.umap: Graph is linked to obje… --- ## [How to control level sequence with external file?(CSV)](https://forums.unrealengine.com/t/how-to-control-level-sequence-with-external-file-csv/377894)
**Author:** [@JuL17](https://forums.unrealengine.com/u/JuL17)\ **Replies:** 2\ **Last updated:** [September 16, 2022, 4:09pm UTC](https://forums.unrealengine.com/t/how-to-control-level-sequence-with-external-file-csv/377894 "2022-09-16T16:09:26Z")
Hi, I want to link the time values from my level sequence to an external excel file like CSV (Comma-separated values - Wikipedia). I found the way to get value from a CSV file but can’t link it to a blueprint that get … --- ## [Externally Referenced warning - what does it mean?](https://forums.unrealengine.com/t/externally-referenced-warning-what-does-it-mean/332810)
**Author:** [@mxnko](https://forums.unrealengine.com/u/mxnko)\ **Replies:** 19\ **Last updated:** [March 12, 2018, 7:37pm UTC](https://forums.unrealengine.com/t/externally-referenced-warning-what-does-it-mean/332810 "2018-03-12T19:37:31Z")
I am curious as to the cause of this error warning: Warning P\_cloud7 ParticleSystemComponent /Game/Maps/Game.Game:PersistentLevel.P\_cloud7.ParticleSystemComponent0 : Externally referenced screenshot This is happening … --- ## [Multiple Static Meshes referenced by a single .UASSET cannot be saved or reimported](https://forums.unrealengine.com/t/multiple-static-meshes-referenced-by-a-single-uasset-cannot-be-saved-or-reimported/418143)
**Author:** [@UnrealBucket](https://forums.unrealengine.com/u/UnrealBucket)\ **Replies:** 0\ **Last updated:** [February 23, 2018, 11:57am UTC](https://forums.unrealengine.com/t/multiple-static-meshes-referenced-by-a-single-uasset-cannot-be-saved-or-reimported/418143 "2018-02-23T11:57:21Z")
Hi, I’m trying to fix / optimize assets in a project I’ve recently joined, but I’m experiencing weird reference problems. I’ve got 8 Static Meshes that seems to be packed into a single .UASSET file. Whenever I try to c… --- ## [Load level or map from external file by using Command-Line](https://forums.unrealengine.com/t/load-level-or-map-from-external-file-by-using-command-line/404441)
**Author:** [@anonymous\_user\_03a2537a1](https://forums.unrealengine.com/u/anonymous_user_03a2537a1)\ **Replies:** 0\ **Last updated:** [September 13, 2017, 12:59am UTC](https://forums.unrealengine.com/t/load-level-or-map-from-external-file-by-using-command-line/404441 "2017-09-13T00:59:09Z")
Hi … The problem is simple: We need to run command line something like “MyGame.exe Level05” which: “MyGame.exe” is an unreal game which is already made and installed on local machine. “Level05” is a simple level (may… --- ## [Automatic Build Tool does not create additional LIB](https://forums.unrealengine.com/t/automatic-build-tool-does-not-create-additional-lib/395544)
**Author:** [@anonymous\_user\_2709d010](https://forums.unrealengine.com/u/anonymous_user_2709d010)\ **Replies:** 1\ **Last updated:** [June 11, 2017, 5:58am UTC](https://forums.unrealengine.com/t/automatic-build-tool-does-not-create-additional-lib/395544 "2017-06-11T05:58:21Z")
I have a C++ unreal project in VS 2015 that uses two static LIBs. the libs are added to the UE solution after I generate the UE project files in the proper way. I link the two libraries in the following way in my …Build… --- ## [Graph is linked to external private object when using custom class](https://forums.unrealengine.com/t/graph-is-linked-to-external-private-object-when-using-custom-class/383239)
**Author:** [@Thorwin99](https://forums.unrealengine.com/u/Thorwin99)\ **Replies:** 2\ **Last updated:** [January 29, 2017, 3:30pm UTC](https://forums.unrealengine.com/t/graph-is-linked-to-external-private-object-when-using-custom-class/383239 "2017-01-29T15:30:07Z")
I created a custom C++ class actor and using a class reference for it in my Player BP. Everything is fine until I create the variable to hold the class. Then when i want to save it it says Can’t save …/…/…/…/…/…/Users… --- ## [4.7\_P8 - Externally Referenced Warnings](https://forums.unrealengine.com/t/4-7-p8-externally-referenced-warnings/307365)
**Author:** [@anonymous\_user\_0df12f74](https://forums.unrealengine.com/u/anonymous_user_0df12f74)\ **Replies:** 23\ **Last updated:** [January 22, 2017, 11:30pm UTC](https://forums.unrealengine.com/t/4-7-p8-externally-referenced-warnings/307365 "2017-01-22T23:30:17Z")
This was being investigated on the \[forums in the 4.7 Preview thread\]\[1\], moving the relevant information here for clarity. 4.7 preview 7 was preventing my Skydome and Ocean materials from being applied, turns out it wa… --- ## [OS X Crashes, dark maps, and externally referenced assets](https://forums.unrealengine.com/t/os-x-crashes-dark-maps-and-externally-referenced-assets/371010)
**Author:** [@Reisn7CC](https://forums.unrealengine.com/u/Reisn7CC)\ **Replies:** 7\ **Last updated:** [October 7, 2016, 2:28pm UTC](https://forums.unrealengine.com/t/os-x-crashes-dark-maps-and-externally-referenced-assets/371010 "2016-10-07T14:28:48Z")
We’re currently trying to open our project which we developed on Windows with a MacBook Pro (NVIDIA GeForce GT 750M, Mac OS X 10.11.6). The project is really dark in lit mode and it crashes regularly on specific actions … --- ## [Externally Referenced Warnings](https://forums.unrealengine.com/t/externally-referenced-warnings/341136)
**Author:** [@anonymous\_user\_fe9b0feb](https://forums.unrealengine.com/u/anonymous_user_fe9b0feb)\ **Replies:** 4\ **Last updated:** [July 5, 2016, 2:40pm UTC](https://forums.unrealengine.com/t/externally-referenced-warnings/341136 "2016-07-05T14:40:42Z")
It seems like the “Externally Referenced Warning” has been along for quite some time. Recently they magically appeared in my project as well. I’ve been digging through the Unreal forums and tried things like renaming th… --- ## [Externally Referenced Asset Warning (Project Rename Doesn't Fix)](https://forums.unrealengine.com/t/externally-referenced-asset-warning-project-rename-doesnt-fix/358590)
**Author:** [@anonymous\_user\_7f2ebbc2](https://forums.unrealengine.com/u/anonymous_user_7f2ebbc2)\ **Replies:** 3\ **Last updated:** [June 16, 2016, 4:09am UTC](https://forums.unrealengine.com/t/externally-referenced-asset-warning-project-rename-doesnt-fix/358590 "2016-06-16T04:09:42Z")
I have all of my projects stored on the server, which may be the problem. I don’t need to cook or build the game, as I am only rendering. Having to wait for the warning dialog to come up to say it’s fine that there are… --- ## [\[UE4.10\] Map Check Errors '\[ObjectName\] : Externally referenced'](https://forums.unrealengine.com/t/ue4-10-map-check-errors-objectname-externally-referenced/338193)
**Author:** [@anonymous\_user\_31e59502](https://forums.unrealengine.com/u/anonymous_user_31e59502)\ **Replies:** 3\ **Last updated:** [May 11, 2016, 1:29am UTC](https://forums.unrealengine.com/t/ue4-10-map-check-errors-objectname-externally-referenced/338193 "2016-05-11T01:29:12Z")
Hi. I have upagrade me project on UE 4.10, now at compile i have Map Check Errors “\[ObjectName\] : Externally referenced” for fiew objects. I read doc but no way… --- ## [Dynamic Material Instance with Decal make external link bug](https://forums.unrealengine.com/t/dynamic-material-instance-with-decal-make-external-link-bug/355663)
**Author:** [@Gomo](https://forums.unrealengine.com/u/Gomo)\ **Replies:** 16\ **Last updated:** [May 5, 2016, 2:27pm UTC](https://forums.unrealengine.com/t/dynamic-material-instance-with-decal-make-external-link-bug/355663 "2016-05-05T14:27:04Z")
With setup shown in picture I’ve got messages about some external references to material instance when I try to save map and given actor is placed on that map. Basically - i can’t save a map. I think in 4.10 it worke… --- ## [Externally Refrence Bug and HMD Orientaion Broken](https://forums.unrealengine.com/t/externally-refrence-bug-and-hmd-orientaion-broken/353034)
**Author:** [@Mudflaper18](https://forums.unrealengine.com/u/Mudflaper18)\ **Replies:** 2\ **Last updated:** [April 12, 2016, 3:33pm UTC](https://forums.unrealengine.com/t/externally-refrence-bug-and-hmd-orientaion-broken/353034 "2016-04-12T15:33:40Z")
When I converted my project from 4.10 to 4.11, the entire project got messed up. The message log came up saying that everything in the project was externally referenced, and all of the code that I had been using for the … --- ## [Rescource efficiency with BSP architecture](https://forums.unrealengine.com/t/rescource-efficiency-with-bsp-architecture/348696)
**Author:** [@anonymous\_user\_2fd18351](https://forums.unrealengine.com/u/anonymous_user_2fd18351)\ **Replies:** 4\ **Last updated:** [February 27, 2016, 1:32am UTC](https://forums.unrealengine.com/t/rescource-efficiency-with-bsp-architecture/348696 "2016-02-27T01:32:44Z")
Hello, I am fairly new to unreal engine 4, and I have been doing some work with BSP’s making small designs, and I was wondering if using BSP’s for architecture is more resource efficient than externally modelling my arch… --- ## [Upgrading from 4.8.3 to 4.9.2 build/packaging errors](https://forums.unrealengine.com/t/upgrading-from-4-8-3-to-4-9-2-build-packaging-errors/346191)
**Author:** [@CraigColby](https://forums.unrealengine.com/u/CraigColby)\ **Replies:** 1\ **Last updated:** [February 3, 2016, 2:31am UTC](https://forums.unrealengine.com/t/upgrading-from-4-8-3-to-4-9-2-build-packaging-errors/346191 "2016-02-03T02:31:21Z")
I am fairly new to Unreal Engine. I have been away from my project for the last 6 months or so but I now want to resume work on it and would like to upgrade to latest ‘stable’ version. My project builds and packages in… --- ## [Externally referenced map check warning? Cant build lighting now !?](https://forums.unrealengine.com/t/externally-referenced-map-check-warning-cant-build-lighting-now/338572)
**Author:** [@kurylo3d](https://forums.unrealengine.com/u/kurylo3d)\ **Replies:** 6\ **Last updated:** [November 16, 2015, 10:20pm UTC](https://forums.unrealengine.com/t/externally-referenced-map-check-warning-cant-build-lighting-now/338572 "2015-11-16T22:20:14Z")
MapCheck:Warning: Warning M\_M\_work\_PrivateBathHouseMerge StaticMeshComponent /Game/Maps/BathHouseResort/Section\_PrivateBathHouse\_LowPoly.Section\_PrivateBathHouse\_LowPoly:PersistentLevel.M\_M\_work\_PrivateBathHouseMerge.Sta… --- ## [Migration from 4.9.3 to 4.10 - External reference in StaticMesh](https://forums.unrealengine.com/t/migration-from-4-9-3-to-4-10-external-reference-in-staticmesh/338290)
**Author:** [@intoxicat3](https://forums.unrealengine.com/u/intoxicat3)\ **Replies:** 1\ **Last updated:** [November 12, 2015, 7:01pm UTC](https://forums.unrealengine.com/t/migration-from-4-9-3-to-4-10-external-reference-in-staticmesh/338290 "2015-11-12T19:01:40Z")
After migration all of my maps have again warnings: StaticMeshComponent0 externally referenced. --- ## [Warning on opening UE 4.6.1 project's level on UE 4.9](https://forums.unrealengine.com/t/warning-on-opening-ue-4-6-1-projects-level-on-ue-4-9/335130)
**Author:** [@anonymous\_user\_a7bc8eb9](https://forums.unrealengine.com/u/anonymous_user_a7bc8eb9)\ **Replies:** 1\ **Last updated:** [October 13, 2015, 10:00pm UTC](https://forums.unrealengine.com/t/warning-on-opening-ue-4-6-1-projects-level-on-ue-4-9/335130 "2015-10-13T22:00:38Z")
Hi I’ve totally developed my project on UE 4.6.1 and I opened it on UE 4.9 There is no problem with opening the project but when I want to open a specific level the following warnings will occur : “Externally referenced”… --- ## [External reference and viewport camera issue in 4.9/4.9.1](https://forums.unrealengine.com/t/external-reference-and-viewport-camera-issue-in-4-9-4-9-1/333118)
**Author:** [@FlickNolis](https://forums.unrealengine.com/u/FlickNolis)\ **Replies:** 2\ **Last updated:** [September 28, 2015, 3:33pm UTC](https://forums.unrealengine.com/t/external-reference-and-viewport-camera-issue-in-4-9-4-9-1/333118 "2015-09-28T15:33:58Z")
I updated to 4.9 and when I made a copy of my project and tried loading my level there was about 500 external reference errors. Then I updated to 4.9.1 and I still had the reference errors and now for some reason the cam… --- ## [Blueprint : Reading external data?](https://forums.unrealengine.com/t/blueprint-reading-external-data/328261)
**Author:** [@Genova](https://forums.unrealengine.com/u/Genova)\ **Replies:** 5\ **Last updated:** [August 13, 2015, 2:44am UTC](https://forums.unrealengine.com/t/blueprint-reading-external-data/328261 "2015-08-13T02:44:13Z")
Hello folks, I kind of doubt it’s already possible but is there a way with Blueprint to read an external text file ? I know there are plugins which can handles that, but I rather use the vanilla version. Thanks --- ## [Why cant i save after simply Re-importing my updated mesh](https://forums.unrealengine.com/t/why-cant-i-save-after-simply-re-importing-my-updated-mesh/327024)
**Author:** [@Stevenkdowner](https://forums.unrealengine.com/u/Stevenkdowner)\ **Replies:** 2\ **Last updated:** [July 31, 2015, 12:28pm UTC](https://forums.unrealengine.com/t/why-cant-i-save-after-simply-re-importing-my-updated-mesh/327024 "2015-07-31T12:28:46Z")
Can’t save G:/Unreal Projects/Moped/Content/Mesh/LightPole.uasset: Graph is linked to private object(s) in an external package. External Object(s): FbxStaticMeshImportData\_4 SceneThumbnailInfo\_1 Try to find the chain… --- ## [LogCompile : error : Could not find extern declaration for cross module reference Z\_Construct\_UClass\_](https://forums.unrealengine.com/t/logcompile-error-could-not-find-extern-declaration-for-cross-module-reference-z-construct-uclass/326757)
**Author:** [@fkkcloud](https://forums.unrealengine.com/u/fkkcloud)\ **Replies:** 0\ **Last updated:** [July 27, 2015, 8:14pm UTC](https://forums.unrealengine.com/t/logcompile-error-could-not-find-extern-declaration-for-cross-module-reference-z-construct-uclass/326757 "2015-07-27T20:14:51Z")
Having trouble with this error message, What am I missing? LogCompile : error : Could not find extern declaration for cross module reference Z\_Construct\_UClass\_AReload3DMenu() --- ## [Externally Referenced Warnings Bug](https://forums.unrealengine.com/t/externally-referenced-warnings-bug/325330)
**Author:** [@anonymous\_user\_642ca581](https://forums.unrealengine.com/u/anonymous_user_642ca581)\ **Replies:** 2\ **Last updated:** [July 15, 2015, 4:27pm UTC](https://forums.unrealengine.com/t/externally-referenced-warnings-bug/325330 "2015-07-15T16:27:02Z")
is the “Externally Referenced Warnings when converting or transferring projects” bug ever going to be fixed? --- ## [Reference to curve](https://forums.unrealengine.com/t/reference-to-curve/295487)
**Author:** [@anonymous\_user\_ccc20063](https://forums.unrealengine.com/u/anonymous_user_ccc20063)\ **Replies:** 3\ **Last updated:** [May 10, 2015, 11:12am UTC](https://forums.unrealengine.com/t/reference-to-curve/295487 "2015-05-10T11:12:10Z")
I would like to add a reference to a float curve (which should be FRichCurve) in order to be able to create it externally in a separate object, and then assign it in my blueprint properties. I’ve tried to use FRichCurve… --- ## [Can't save blueprint with custom component. Graph is linked to private object(s) in an external package](https://forums.unrealengine.com/t/cant-save-blueprint-with-custom-component-graph-is-linked-to-private-object-s-in-an-external-package/300363)
**Author:** [@BlackFangTech](https://forums.unrealengine.com/u/BlackFangTech)\ **Replies:** 6\ **Last updated:** [March 4, 2015, 3:18pm UTC](https://forums.unrealengine.com/t/cant-save-blueprint-with-custom-component-graph-is-linked-to-private-object-s-in-an-external-package/300363 "2015-03-04T15:18:57Z")
Can’t save …/…/…/…/UnrealProjects/SixenseAPI\_Project/Content/Weapons/AssaultRifle/BurstRifle/BurstRifle.uasset: Graph is linked to private object(s) in an external package. External Object(s): Item\_Grip BurstRifle\_C\_1 … --- ## [Master branch build gives me "externally referenced" errors and as a result saving takes almost 10 minutes](https://forums.unrealengine.com/t/master-branch-build-gives-me-externally-referenced-errors-and-as-a-result-saving-takes-almost-10-minutes/306469)
**Author:** [@anonymous\_user\_21a58d97](https://forums.unrealengine.com/u/anonymous_user_21a58d97)\ **Replies:** 1\ **Last updated:** [February 9, 2015, 10:56pm UTC](https://forums.unrealengine.com/t/master-branch-build-gives-me-externally-referenced-errors-and-as-a-result-saving-takes-almost-10-minutes/306469 "2015-02-09T22:56:22Z")
Hello everyone, I would like to report this Dropbox - Error Since i updated from git yesterday, unreal gives me all these errors and i do not understand why.Everything works ok until i decide to press “save all” . It … [Next page](https://forums.unrealengine.com/tag/external-reference/2019.md?match_all_tags=true&page=1&tags%5B%5D=external-reference)