# \#hot-reload **URL:** https://forums.unrealengine.com/tag/hot-reload/2788.md [Latest](https://forums.unrealengine.com/latest.md) · [Categories](https://forums.unrealengine.com/categories.md) · [Tags](https://forums.unrealengine.com/tags.md) --- ## [Texture become empty after ReloadPackages, how to debug rendering code?](https://forums.unrealengine.com/t/texture-become-empty-after-reloadpackages-how-to-debug-rendering-code/2517392)
**Author:** [@CheapMeow](https://forums.unrealengine.com/u/CheapMeow)\ **Replies:** 2\ **Last updated:** [May 20, 2025, 2:35am UTC](https://forums.unrealengine.com/t/texture-become-empty-after-reloadpackages-how-to-debug-rendering-code/2517392 "2025-05-20T02:35:45Z")
Problem I use ReloadPackages to reload texture A from new pak files at runtime. UI that use texture A is refreshed perfectly, but Material B that use texture A is turning black. I use RenderDoc, and find my new texture A… --- ## [Hot Reload problem - LINK : fatal error LNK1104: cannot open file Game-DebugGame.dll](https://forums.unrealengine.com/t/hot-reload-problem-link-fatal-error-lnk1104-cannot-open-file-game-debuggame-dll/441355)
**Author:** [@Bionic\_Ape](https://forums.unrealengine.com/u/Bionic_Ape)\ **Replies:** 9\ **Last updated:** [February 17, 2025, 6:15am UTC](https://forums.unrealengine.com/t/hot-reload-problem-link-fatal-error-lnk1104-cannot-open-file-game-debuggame-dll/441355 "2025-02-17T06:15:52Z")
Hi, I can’t hot reload my Project. The error that I get is fatal error LNK1104: cannot open file 'C:\\ProjectPath\\Binaries\\Win64\\UE4Editor-MyGame-Win64-DebugGame.dll'. It’s only happening when I use the solution configu… --- ## [\[4.15\] DataTable, recompile and hotreload bug](https://forums.unrealengine.com/t/4-15-datatable-recompile-and-hotreload-bug/388141)
**Author:** [@Sveitar](https://forums.unrealengine.com/u/Sveitar)\ **Replies:** 12\ **Last updated:** [November 26, 2024, 5:21pm UTC](https://forums.unrealengine.com/t/4-15-datatable-recompile-and-hotreload-bug/388141 "2024-11-26T17:21:14Z")
I added two new properties to my table row struct in C++ and then compiled using hot-reload. The two new properties were not showing on my datatable editor so I restarted the editor. Once I restarted the editor I found… --- ## [Existing BPs won’t update default values for components if parent c++ changes](https://forums.unrealengine.com/t/existing-bps-won-t-update-default-values-for-components-if-parent-c-changes/2131300)
**Author:** [@andresantacruz](https://forums.unrealengine.com/u/andresantacruz)\ **Replies:** 0\ **Last updated:** [November 17, 2024, 5:15pm UTC](https://forums.unrealengine.com/t/existing-bps-won-t-update-default-values-for-components-if-parent-c-changes/2131300 "2024-11-17T17:15:52Z")
When having a blueprint that inherits form a C++ AActor class. Let’s assume you change a rotation of a USceneComponent in the actor’s constructor, some things happen: On hot reloading/live coding Existing BPs will not… --- ## [Assertion failed: Ret-\>IsA(T::StaticClass())](https://forums.unrealengine.com/t/assertion-failed-ret-isa-t-staticclass/2031791)
**Author:** [@LIFEfreedom](https://forums.unrealengine.com/u/LIFEfreedom)\ **Replies:** 0\ **Last updated:** [September 21, 2024, 9:16pm UTC](https://forums.unrealengine.com/t/assertion-failed-ret-isa-t-staticclass/2031791 "2024-09-21T21:16:19Z")
I get this assertion error after Live Coding build project and reload editor. Would like for someone to explain to me what’s going on in this log and if it’s even possible for me to fix this issue Assertion failed: Ret… --- ## ["Build Solution" has no effect](https://forums.unrealengine.com/t/build-solution-has-no-effect/325188)
**Author:** [@MrKurteous](https://forums.unrealengine.com/u/MrKurteous)\ **Replies:** 3\ **Last updated:** [April 29, 2024, 12:40pm UTC](https://forums.unrealengine.com/t/build-solution-has-no-effect/325188 "2024-04-29T12:40:56Z")
I have created new classes in the Unreal Engine and after I’ve edited them in Visual Studio (I’m using Microsoft Visual Studio Community 2013) I used to press “Build Solution” under the Build-tab. This used to compile th… --- ## [Live Coding cannot be enabled after hot-reload has been used](https://forums.unrealengine.com/t/live-coding-cannot-be-enabled-after-hot-reload-has-been-used/446599)
**Author:** [@hubacek.jakub](https://forums.unrealengine.com/u/hubacek.jakub)\ **Replies:** 16\ **Last updated:** [January 29, 2024, 4:38am UTC](https://forums.unrealengine.com/t/live-coding-cannot-be-enabled-after-hot-reload-has-been-used/446599 "2024-01-29T04:38:19Z")
Hi, after project upgrade from 4.20 to 4.22 I was looking forward to try live coding feature, but so far I was unable to make it work. When I launch editor ( without debugger ) and enable experimental live coding featu… --- ## [HotReload Problem](https://forums.unrealengine.com/t/hotreload-problem/481083)
**Author:** [@ACBYTES](https://forums.unrealengine.com/u/ACBYTES)\ **Replies:** 3\ **Last updated:** [April 3, 2021, 7:43am UTC](https://forums.unrealengine.com/t/hotreload-problem/481083 "2021-04-03T07:43:07Z")
After each compilation on my code, 1: No hot-reload happens. (I’ve tried everything, load code editor after engine, before engine, using engine, etc…) 2: C++ scripts attached to Blueprint classes face and error because… --- ## [Getting hot-reload to work with multiple modules](https://forums.unrealengine.com/t/getting-hot-reload-to-work-with-multiple-modules/423665)
**Author:** [@SanicV2](https://forums.unrealengine.com/u/SanicV2)\ **Replies:** 3\ **Last updated:** [October 17, 2023, 3:25am UTC](https://forums.unrealengine.com/t/getting-hot-reload-to-work-with-multiple-modules/423665 "2023-10-17T03:25:01Z")
Hi, i’m working on a fresh C++ project which should have some logic separated in a different module (not a plugin). The basic part works: I can create a separate module right next to the game module which can be compil… --- ## [Cannot hot reload a C++ Secondary Game module](https://forums.unrealengine.com/t/cannot-hot-reload-a-c-secondary-game-module/1330985)
**Author:** [@olivier.perrault](https://forums.unrealengine.com/u/olivier.perrault)\ **Replies:** 0\ **Last updated:** [October 13, 2023, 1:54am UTC](https://forums.unrealengine.com/t/cannot-hot-reload-a-c-secondary-game-module/1330985 "2023-10-13T01:54:58Z")
This is still not working, I have added code in second game module (not a plugin), and cannot hot reload when compiling with lower right icon, or VS studio. When I go in my Binaries/Win64 folder, I found that new dll ha… --- ## [Hot reload not working sometimes](https://forums.unrealengine.com/t/hot-reload-not-working-sometimes/387037)
**Author:** [@Sqobar](https://forums.unrealengine.com/u/Sqobar)\ **Replies:** 18\ **Last updated:** [October 13, 2023, 1:30am UTC](https://forums.unrealengine.com/t/hot-reload-not-working-sometimes/387037 "2023-10-13T01:30:59Z")
Hello Unreal community. I made plugin (just few simple classes) and use it in my project. Everything works fine, but i can’t compile in Visual Studio when Editor is running. In VS i see error message: Compiling game mo… --- ## [Crash at every Visual Studio Code Compile or HotReload](https://forums.unrealengine.com/t/crash-at-every-visual-studio-code-compile-or-hotreload/475951)
**Author:** [@anonymous\_user\_64aa3fd1](https://forums.unrealengine.com/u/anonymous_user_64aa3fd1)\ **Replies:** 5\ **Last updated:** [May 6, 2023, 10:28pm UTC](https://forums.unrealengine.com/t/crash-at-every-visual-studio-code-compile-or-hotreload/475951 "2023-05-06T22:28:28Z")
Hi everyone,First of all, thank you in advance. I ve just recently started using Unreal Engine and got started with a few projects, everything was doing alright until it started crashing after EVERY Visual Studio Compil… --- ## [Hot reloading with VS Code](https://forums.unrealengine.com/t/hot-reloading-with-vs-code/436373)
**Author:** [@anonymous\_user\_512b29991](https://forums.unrealengine.com/u/anonymous_user_512b29991)\ **Replies:** 2\ **Last updated:** [July 9, 2022, 2:02pm UTC](https://forums.unrealengine.com/t/hot-reloading-with-vs-code/436373 "2022-07-09T14:02:58Z")
Hello, is there a way to get hot reloading working with visual studio code on Linux? Hot reloading works perfectly fine if I compile from the editor but nothing happens if I compile from vscode. I’m using the “\[Project… --- ## [Hot reloading on Linux 4.20](https://forums.unrealengine.com/t/hot-reloading-on-linux-4-20/455213)
**Author:** [@anonymous\_user\_b86aa7a1](https://forums.unrealengine.com/u/anonymous_user_b86aa7a1)\ **Replies:** 1\ **Last updated:** [November 13, 2021, 8:51pm UTC](https://forums.unrealengine.com/t/hot-reloading-on-linux-4-20/455213 "2021-11-13T20:51:43Z")
I couldn’t get hot reloading to work on 4.20. Previous answers had used a ModuleWithSuffix argument to add a random number to the end. Instead, this script builds normally using cmake (from a CLion project) and then copi… --- ## [Unreal Engine C++ Hot reload tooks 70m](https://forums.unrealengine.com/t/unreal-engine-c-hot-reload-tooks-70m/490366)
**Author:** [@Fnanex01](https://forums.unrealengine.com/u/Fnanex01)\ **Replies:** 0\ **Last updated:** [October 28, 2021, 7:45pm UTC](https://forums.unrealengine.com/t/unreal-engine-c-hot-reload-tooks-70m/490366 "2021-10-28T19:45:24Z")
In Unreal Engine 4 i have C++ compile time 4200s. But i see: first rider compile engine and later my code. Who know, how disable compile editor, or how improve compile? --- ## [Compiling while editor is open breaks Blueprints](https://forums.unrealengine.com/t/compiling-while-editor-is-open-breaks-blueprints/395512)
**Author:** [@Extrawelt](https://forums.unrealengine.com/u/Extrawelt)\ **Replies:** 4\ **Last updated:** [April 11, 2021, 12:52pm UTC](https://forums.unrealengine.com/t/compiling-while-editor-is-open-breaks-blueprints/395512 "2021-04-11T12:52:06Z")
Hi, i have a very strange problem with our project. Evertime i recompile the game (doesnt matter if in vs or in editor), c++ blueprint nodes have errors. It only happens in 2 different blueprints. Like they never existe… --- ## [Hot Reload crashes Editor](https://forums.unrealengine.com/t/hot-reload-crashes-editor/465443)
**Author:** [@AndrewVal](https://forums.unrealengine.com/u/AndrewVal)\ **Replies:** 10\ **Last updated:** [April 3, 2021, 4:20pm UTC](https://forums.unrealengine.com/t/hot-reload-crashes-editor/465443 "2021-04-03T16:20:26Z")
Since 4.25 HotReload doesn’t work properly. Everytime when I compile a project in Visual Studio or inside UE4 Editor I’ve got a crash with the following CallStack and Exception Unhandled exception at 0x00007FF9AC0F0DA8 … --- ## [Updated 4.26 project crashes on Compile, Hot Reload fail](https://forums.unrealengine.com/t/updated-4-26-project-crashes-on-compile-hot-reload-fail/475767)
**Author:** [@Tiny\_Tora](https://forums.unrealengine.com/u/Tiny_Tora)\ **Replies:** 4\ **Last updated:** [January 16, 2021, 8:59pm UTC](https://forums.unrealengine.com/t/updated-4-26-project-crashes-on-compile-hot-reload-fail/475767 "2021-01-16T20:59:35Z")
I recently updated my project to 4.26, the project successfully opened and played after converting to 4.26, but upon compiling of the project, it immediately crashes with the attached crash report which points to non of … --- ## [Editor crashes after compile c++ source](https://forums.unrealengine.com/t/editor-crashes-after-compile-c-source/477189)
**Author:** [@insooneelife](https://forums.unrealengine.com/u/insooneelife)\ **Replies:** 0\ **Last updated:** [January 15, 2021, 11:43am UTC](https://forums.unrealengine.com/t/editor-crashes-after-compile-c-source/477189 "2021-01-15T11:43:37Z")
It always crashes after add or modifies c++ source. And I tried to report this to the Unreal Engine Bug Submission page, but it doesn’t give any responses after submitting. link text Unhandled exception at 0x00007FFBD… --- ## [Any way to force Unreal to rebuild Binaries after I recompile?](https://forums.unrealengine.com/t/any-way-to-force-unreal-to-rebuild-binaries-after-i-recompile/474209)
**Author:** [@AnotherZach](https://forums.unrealengine.com/u/AnotherZach)\ **Replies:** 1\ **Last updated:** [December 22, 2020, 10:22pm UTC](https://forums.unrealengine.com/t/any-way-to-force-unreal-to-rebuild-binaries-after-i-recompile/474209 "2020-12-22T22:22:38Z")
I’m currently working on a C++ plugin. Hotreload doesn’t behave after I recompile the plugin code. Thus every time I recompile, I have to close the editor, delete the binaries for the plugin, then rebuild. This ensures m… --- ## [Why are hot reloads taking so long to do for me?](https://forums.unrealengine.com/t/why-are-hot-reloads-taking-so-long-to-do-for-me/473879)
**Author:** [@anonymous\_user\_0d03ced1](https://forums.unrealengine.com/u/anonymous_user_0d03ced1)\ **Replies:** 0\ **Last updated:** [November 2, 2020, 2:21pm UTC](https://forums.unrealengine.com/t/why-are-hot-reloads-taking-so-long-to-do-for-me/473879 "2020-11-02T14:21:56Z")
Why are hot reloads taking so long to do for me?? I make a small change like changing the name of a variable and it takes like 50 to 100 seconds to do the hot reload. When I simply build the solution in Rider it only tak… --- ## [\[4.8 Promoted\] Extra parameters on BP callable functions not detected after hot-reload](https://forums.unrealengine.com/t/4-8-promoted-extra-parameters-on-bp-callable-functions-not-detected-after-hot-reload/315001)
**Author:** [@TommyBear](https://forums.unrealengine.com/u/TommyBear)\ **Replies:** 3\ **Last updated:** [August 27, 2020, 10:31pm UTC](https://forums.unrealengine.com/t/4-8-promoted-extra-parameters-on-bp-callable-functions-not-detected-after-hot-reload/315001 "2020-08-27T22:31:49Z")
When adding new parameters to functions on components which are “BlueprintCallable”, existing BPs reference this function will fail to compile until the node is manually removed and re-added. Steps to reproduce: Start… --- ## [Crash on Hot Reload: in PropertyProxyArchive.h -\> "virtual FArchive& operator\<\<(FField\*& Value) override" XCEPTION\_ACCESS\_VIOLATION](https://forums.unrealengine.com/t/crash-on-hot-reload-in-propertyproxyarchive-h-virtual-farchive-operator-ffield-value-override-xception-access-violation/466581)
**Author:** [@bggangel](https://forums.unrealengine.com/u/bggangel)\ **Replies:** 2\ **Last updated:** [June 29, 2020, 9:24pm UTC](https://forums.unrealengine.com/t/crash-on-hot-reload-in-propertyproxyarchive-h-virtual-farchive-operator-ffield-value-override-xception-access-violation/466581 "2020-06-29T21:24:14Z")
I updated a working project from 4.24.3 to 4.25.1. This problem only happens in 4.25 but PropertyProxyArchive.h does not exist in 4.23 so that makes sense. The problem : When the game has run at least once and I make a… --- ## [UE4 crashes every time I hot reload](https://forums.unrealengine.com/t/ue4-crashes-every-time-i-hot-reload/392332)
**Author:** [@mgumley](https://forums.unrealengine.com/u/mgumley)\ **Replies:** 7\ **Last updated:** [May 26, 2020, 7:50pm UTC](https://forums.unrealengine.com/t/ue4-crashes-every-time-i-hot-reload/392332 "2020-05-26T19:50:59Z")
UE4 crashes every time I hot reload. When I build without the editing running, everything is fine. How can I fix this or at least determine why it’s crashing? EDIT: I believe it has something to do with CreateDefaultSu… --- ## [Missing Compile Button / Hot Reload not working](https://forums.unrealengine.com/t/missing-compile-button-hot-reload-not-working/465332)
**Author:** [@Dividuum](https://forums.unrealengine.com/u/Dividuum)\ **Replies:** 6\ **Last updated:** [May 18, 2020, 9:05am UTC](https://forums.unrealengine.com/t/missing-compile-button-hot-reload-not-working/465332 "2020-05-18T09:05:27Z")
Hello guys! I am was working on my code today, when I realized that not only my code changes do not get hot-reloaded into the editor anymore, but also my Compile Button is missing: Some time, it was there, this proj… --- ## [How can i debug with vs2017 after hot reload](https://forums.unrealengine.com/t/how-can-i-debug-with-vs2017-after-hot-reload/426183)
**Author:** [@lizhi0086](https://forums.unrealengine.com/u/lizhi0086)\ **Replies:** 5\ **Last updated:** [January 31, 2020, 4:12pm UTC](https://forums.unrealengine.com/t/how-can-i-debug-with-vs2017-after-hot-reload/426183 "2020-01-31T16:12:11Z")
I generally find it easier to close the editor and then build run the process from VS. It takes longer but you get better results. However, if you want to try not restarting the editor then there is a way: Place / Ena… --- ## [Reinstancing non-actor, failed to resolve archetype object](https://forums.unrealengine.com/t/reinstancing-non-actor-failed-to-resolve-archetype-object/459738)
**Author:** [@anonymous\_user\_b496f3c1](https://forums.unrealengine.com/u/anonymous_user_b496f3c1)\ **Replies:** 1\ **Last updated:** [December 20, 2019, 3:31pm UTC](https://forums.unrealengine.com/t/reinstancing-non-actor-failed-to-resolve-archetype-object/459738 "2019-12-20T15:31:32Z")
I keep getting that error when hot-reloaded after I added a custom c++ scene component to my actor blueprint. It resets all the settings for that component. Is there any way around it? I think it’s related to this Unrea… --- ## [Compiled C++ code isn't hot reloaded](https://forums.unrealengine.com/t/compiled-c-code-isnt-hot-reloaded/457051)
**Author:** [@Blindopoly](https://forums.unrealengine.com/u/Blindopoly)\ **Replies:** 13\ **Last updated:** [October 21, 2019, 4:56am UTC](https://forums.unrealengine.com/t/compiled-c-code-isnt-hot-reloaded/457051 "2019-10-21T04:56:00Z")
I recently updated to 4.23 and am running into a very annoying issue when using C++. Basically, (seemingly randomly) whenever I make a change to C++ code, press compile in UE4, and then press play, my code changes are no… --- ## [Plugin reload crash](https://forums.unrealengine.com/t/plugin-reload-crash/345275)
**Author:** [@anonymous\_user\_7fb66735](https://forums.unrealengine.com/u/anonymous_user_7fb66735)\ **Replies:** 6\ **Last updated:** [September 21, 2019, 9:49am UTC](https://forums.unrealengine.com/t/plugin-reload-crash/345275 "2019-09-21T09:49:04Z")
Hi, I’m currently exploring the making of plugins and I found a annoying crash when trying to change my plugin runtime. Reproduction steps: Create a new c++ project from scratch Open Edit \> Plugins Press New Plugin… --- ## [UE4 SlateWidget create C++ file hot reload failed](https://forums.unrealengine.com/t/ue4-slatewidget-create-c-file-hot-reload-failed/454968)
**Author:** [@RiverBB123](https://forums.unrealengine.com/u/RiverBB123)\ **Replies:** 0\ **Last updated:** [September 7, 2019, 10:56am UTC](https://forums.unrealengine.com/t/ue4-slatewidget-create-c-file-hot-reload-failed/454968 "2019-09-07T10:56:11Z")
hi everyone, i have a problem like this.When i create SlateWidget from UE4 Editor,it say like this: and the output log : when i go to vs and recompile the project : so what shoud i do???i do not understand som… [Next page](https://forums.unrealengine.com/tag/hot-reload/2788.md?match_all_tags=true&page=1&tags%5B%5D=hot-reload)