There are a lot of warnings and errors within your project. Please focus on correcting the errors first. The errors below seem to indicate that these structures are unknown.
Did you update your project from an older version? Did you adjust, or restructure any of your structures within your project?
Here are the warnings from the provided. The only show up to 50 warnings at any given time. The say you have 79 errors and 1584 warnings.
[2015.11.21-21.44.08:378][ 0]LogInit:Display: LogTextLocalizationManager:Warning: Loaded localization resources contain conflicting entries for (Namespace:ContentBrowser, Key:ImportAssetToolTip):
Localization Resource: (C:/Program Files/Epic Games/4.8/Engine/Content/Localization/Editor/en/Editor.locres) Source String Hash: (-630476809) Localized String: (Import to {0}...)
Localization Resource: (C:/Program Files/Epic Games/4.8/Engine/Content/Localization/Editor/en/Editor.locres) Source String Hash: (1271782899) Localized String: (Imports an asset from file to this folder.)
[2015.11.21-21.44.08:378][ 0]LogInit:Display: LogLinker:Warning: Asset '../../../../../../Users/DBK/Documents/Unreal Projects/ALpha_2/Content/MT_Parents/Textures/TX_ParentPlaceholder_Ems.uasset' has been saved with empty engine version. The asset will be loaded but may be incompatible.
[2015.11.21-21.44.08:379][ 0]LogInit:Display: LogClass:Warning: Property S_itemdata of BP_itemmaster_C struct type mismatch STRUCT_REINST_S_itemData_0/FallbackStruct for package: ../../../../../../Users/DBK/Documents/Unreal Projects/ALpha_2/Content/1nventory/Actor/Item/BP_itemmaster.uasset. If that property got renamed, add an ActiveStructRedirect.
[2015.11.21-21.44.08:379][ 0]LogInit:Display: LogClass:Warning: Property S_itemdata of BP_itemmaster_C struct type mismatch FallbackStruct/S_itemData for package: FObjectReader. If that property got renamed, add an ActiveStructRedirect.
[2015.11.21-21.44.08:379][ 0]LogInit:Display: LogLinker:Warning: Asset '../../../Engine/Content/Functions/Engine_MaterialFunctions01/SpeedTree/SpeedTreeColorVariation.uasset' has been saved with empty engine version. The asset will be loaded but may be incompatible.
[2015.11.21-21.44.08:380][ 0]LogInit:Display: LogLinker:Warning: BoolProperty_1811 has an inappropriate outermost, it was probably saved with a deprecated outer (file: ../../../../../../Users/DBK/Documents/Unreal Projects/ALpha_2/Content/1nventory/GUI/W_invButton.uasset)
[2015.11.21-21.44.08:380][ 0]LogInit:Display: LogLinker:Warning: StrProperty_438 has an inappropriate outermost, it was probably saved with a deprecated outer (file: ../../../../../../Users/DBK/Documents/Unreal Projects/ALpha_2/Content/1nventory/GUI/W_invButton.uasset)
[2015.11.21-21.44.08:380][ 0]LogInit:Display: LogClass:Warning: Property S_itemDeta of W_invButton_C struct type mismatch STRUCT_REINST_S_itemData_0/FallbackStruct for package: ../../../../../../Users/DBK/Documents/Unreal Projects/ALpha_2/Content/1nventory/GUI/W_invButton.uasset. If that property got renamed, add an ActiveStructRedirect.
[2015.11.21-21.44.08:381][ 0]LogInit:Display: LogClass:Warning: Property S_itemDeta of W_invButton_C struct type mismatch FallbackStruct/S_itemData for package: FObjectReader. If that property got renamed, add an ActiveStructRedirect.
[2015.11.21-21.44.08:381][ 0]LogInit:Display: LogLinker:Warning: Can't find file '/Game/Models/fps_hands_stm'
[2015.11.21-21.44.08:381][ 0]LogInit:Display: LogUObjectGlobals:Warning: Failed to load '/Game/Models/fps_hands_stm': Can't find file '/Game/Models/fps_hands_stm'
[2015.11.21-21.44.08:381][ 0]LogInit:Display: LogUObjectGlobals:Warning: Failed to find object 'Object /Game/Models/fps_hands_stm.fps_hands_stm'
[2015.11.21-21.44.08:381][ 0]LogInit:Display: CookResults:Warning: Warning Unable to generate long package name for BoolProperty_1811. Path should start with a '/'
[2015.11.21-21.44.08:381][ 0]LogInit:Display: LogCook:Warning: Unable to generate long package name for BoolProperty_1811. Path should start with a '/'
[2015.11.21-21.44.08:382][ 0]LogInit:Display: CookResults:Warning: Warning Unable to generate long package name for StrProperty_438. Path should start with a '/'
[2015.11.21-21.44.08:382][ 0]LogInit:Display: LogCook:Warning: Unable to generate long package name for StrProperty_438. Path should start with a '/'
[2015.11.21-21.44.08:382][ 0]LogInit:Display: LogLinker:Warning: StructProperty_1231 has an inappropriate outermost, it was probably saved with a deprecated outer (file: ../../../../../../Users/DBK/Documents/Unreal Projects/ALpha_2/Content/1nventory/Actor/Item/Oku/HastaWidget/W_acilgiris.uasset)
[2015.11.21-21.44.08:382][ 0]LogInit:Display: LogClass:Warning: Property s_itemdetahasta of W_acilgiris_C struct type mismatch STRUCT_REINST_S_itemData_0/FallbackStruct for package: ../../../../../../Users/DBK/Documents/Unreal Projects/ALpha_2/Content/1nventory/Actor/Item/Oku/HastaWidget/W_acilgiris.uasset. If that property got renamed, add an ActiveStructRedirect.
[2015.11.21-21.44.08:383][ 0]LogInit:Display: LogClass:Warning: Property s_itemdetahasta of W_acilgiris_C struct type mismatch FallbackStruct/S_itemData for package: FObjectReader. If that property got renamed, add an ActiveStructRedirect.
[2015.11.21-21.44.08:383][ 0]LogInit:Display: LogLinker:Warning: Asset '../../../Engine/Content/Functions/Engine_MaterialFunctions02/Utility/CustomReflectionVector.uasset' has been saved with empty engine version. The asset will be loaded but may be incompatible.
[2015.11.21-21.44.08:383][ 0]LogInit:Display: LogBlueprint:Warning: [compiler 4] Warning 'Item' is already a 'BP Puzzle', you don't need Cast To BP_Puzzle .
[2015.11.21-21.44.08:383][ 0]LogInit:Display: LogBlueprint:Warning: [compiler 4] Warning [0018.92] Compile of 4 successful, but with 1 Warning(s) [in 249 ms]
[2015.11.21-21.44.08:384][ 0]LogInit:Display: LogBlueprint:Warning: [compiler 4] Warning [0018.92] Compile of 4 successful, but with 2 Warning(s) [in 0 ms]
[2015.11.21-21.44.08:384][ 0]LogInit:Display: LogMaterial:Warning: Failed to compile Material /Game/Animation/Kubra/Bodymat_eyelashes.Bodymat_eyelashes for platform PCD3D_SM5, Default Material will be used in game.
[2015.11.21-21.44.08:384][ 0]LogInit:Display: LogMaterial:Warning: (Node TextureSample) TextureSample> Sampler type is Color, should be Linear Color for /Game/Animation/Kubra/FuseModel_Body_specular.FuseModel_Body_specular
[2015.11.21-21.44.08:384][ 0]LogInit:Display: LogMaterial:Warning: Failed to compile Material /Game/Animation/Kubra/Bodymat_eyelashes.Bodymat_eyelashes for platform PCD3D_SM4, Default Material will be used in game.
[2015.11.21-21.44.08:384][ 0]LogInit:Display: LogUObjectGlobals:Warning: Failed to find object 'Object None.SM_Jagged_Rock01'
[2015.11.21-21.44.08:385][ 0]LogInit:Display: LogLinker:Warning: Can't find file '/Game/for_test_del/Locker_box_stm'
[2015.11.21-21.44.08:385][ 0]LogInit:Display: LogUObjectGlobals:Warning: Failed to load '/Game/for_test_del/Locker_box_stm': Can't find file '/Game/for_test_del/Locker_box_stm'
[2015.11.21-21.44.08:385][ 0]LogInit:Display: LogUObjectGlobals:Warning: Failed to find object 'Object /Game/for_test_del/Locker_box_stm.Locker_box_stm'
[2015.11.21-21.44.08:385][ 0]LogInit:Display: LogLinker:Warning: Can't find file '/Game/Models/Man_test_size'
[2015.11.21-21.44.08:385][ 0]LogInit:Display: LogUObjectGlobals:Warning: Failed to load '/Game/Models/Man_test_size': Can't find file '/Game/Models/Man_test_size'
[2015.11.21-21.44.08:386][ 0]LogInit:Display: LogUObjectGlobals:Warning: Failed to find object 'Object /Game/Models/Man_test_size.Man_test_size'
[2015.11.21-21.44.08:386][ 0]LogInit:Display: LogLinker:Warning: Can't find file '/Game/Assets/Mesh/SM_Hallway_Poster01'
[2015.11.21-21.44.08:386][ 0]LogInit:Display: LogUObjectGlobals:Warning: Failed to load '/Game/Assets/Mesh/SM_Hallway_Poster01': Can't find file '/Game/Assets/Mesh/SM_Hallway_Poster01'
[2015.11.21-21.44.08:386][ 0]LogInit:Display: LogUObjectGlobals:Warning: Failed to find object 'Object /Game/Assets/Mesh/SM_Hallway_Poster01.SM_Hallway_Poster01'
[2015.11.21-21.44.08:386][ 0]LogInit:Display: LogLinker:Warning: Can't find file '/Game/Models/Props/Refrigerator_opened'
[2015.11.21-21.44.08:386][ 0]LogInit:Display: LogUObjectGlobals:Warning: Failed to load '/Game/Models/Props/Refrigerator_opened': Can't find file '/Game/Models/Props/Refrigerator_opened'
[2015.11.21-21.44.08:387][ 0]LogInit:Display: LogUObjectGlobals:Warning: Failed to find object 'Object /Game/Models/Props/Refrigerator_opened.Refrigerator_opened'
[2015.11.21-21.44.08:387][ 0]LogInit:Display: LogLinker:Warning: Can't find file '/Game/Environments/Foliage/Grass/FieldGrass/SM_FieldGrass_01'
[2015.11.21-21.44.08:387][ 0]LogInit:Display: LogUObjectGlobals:Warning: Failed to load '/Game/Environments/Foliage/Grass/FieldGrass/SM_FieldGrass_01': Can't find file '/Game/Environments/Foliage/Grass/FieldGrass/SM_FieldGrass_01'
[2015.11.21-21.44.08:388][ 0]LogInit:Display: LogUObjectGlobals:Warning: Failed to find object 'Object /Game/Environments/Foliage/Grass/FieldGrass/SM_FieldGrass_01.SM_FieldGrass_01'
[2015.11.21-21.44.08:388][ 0]LogInit:Display: LogShaderCompilers:Warning: Failed to compile Material /Game/ExampleContent/PostProcessing/Materials/PPMAT_BlendablePostProcess2.PPMAT_BlendablePostProcess2 for platform PCD3D_SM5, Default Material will be used in game.
[2015.11.21-21.44.08:388][ 0]LogInit:Display: CookResults:Warning: Warning Unable to generate long package name for StructProperty_1231. Path should start with a '/'
[2015.11.21-21.44.08:389][ 0]LogInit:Display: LogCook:Warning: Unable to generate long package name for StructProperty_1231. Path should start with a '/'
[2015.11.21-21.44.08:389][ 0]LogInit:Display: LogLinker:Warning: Can't find file '/Game/Benimkiler/fount_shd'
[2015.11.21-21.44.08:390][ 0]LogInit:Display: LogUObjectGlobals:Warning: Failed to load '/Game/Benimkiler/fount_shd': Can't find file '/Game/Benimkiler/fount_shd'
[2015.11.21-21.44.08:390][ 0]LogInit:Display: LogLinker:Warning: Can't find file for asset '/Game/Benimkiler/fount_shd' while loading ../../../../../../Users/DBK/Documents/Unreal Projects/ALpha_2/Content/Assets/Buornek/Benimkiler/fount.uasset.
[2015.11.21-21.44.08:390][ 0]LogInit:Display: LogUObjectGlobals:Warning: Failed to load '../../../../../../Users/DBK/Documents/Unreal Projects/ALpha_2/Content/Assets/Buornek/Benimkiler/fount.uasset': Can't find file for asset '/Game/Benimkiler/fount_shd' while loading ../../../../../../Users/DBK/Documents/Unreal Projects/ALpha_2/Content/Assets/Buornek/Benimkiler/fount.uasset.
[2015.11.21-21.44.08:390][ 0]LogInit:Display: LogLinker:Warning: Can't find file for asset '/Game/Benimkiler/fount_shd' while loading NULL.
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For anyone still running into this:
I got this today in 4.13, but I was able to fix the cook error by just renaming the variable instead of removing and re-adding it to the classes that reference it (much easier than having to fix up every reference afterward).
I ran into this issue and fixed it as suggested by renaming a bunch of variables. Project was updated from 4.12. Shouldn’t there be some sort of “blueprint clean” functionality to address these inconsistencies that can appear. Nothing about the logic in my game has changed.
Have you tried migrating your project over to a new, clean project in either 4.13.2 or 4.14.0? If so, what was your result? Did you try recreating your blueprints as well?
I just encounter the same problem,and i googled it , i try to use a lot of methods, but it has not been resolved. at last , i renamed the struct. and build the project again. it was sucessed! you can try it.
I just encounter the same problem,and i googled it , i try to use a lot of methods, but it has not been resolved. at last , i renamed the struct. and build the project again. it was sucessed! you can try it.
This article really helped me; six months in to a project, i was close to smashing my pc/monitor/head to bits.
This pointed me to renaming my structures one-by-one until it suddenly started to package. What didn’t help was the error talked about an unknown struct I didn’t even have! There seems to be a problem with Unreal when you refactor which causes this…
Anyway, thanks to this post I am happy again (with just a sore head!)
I had this issue too. Fixed with the renaming trick mentionned above.
I noticed something else in 4.17 : when editing the structs, i click save button, all variables types are changed to base types struct/int/string, etc. A vector and a transform were changed to struct. Then i close this window, launch the game, and then open the struct again, it goes back to normal. Opening the struct without launching the game still displays the wrong types on variables.
i get this error occasionally… i just experienced it these days back… here was my fix: I went into the struct, opened it, saved it, closed it… went into the file that was using that struct (in my case just a save file, even though it is referenced by many other bp’s just going into the original save file that struct is saved in fixes this bug)… so open that save file, click on the struct variable, compile the save file, close it… boom project now builds successfully… its not the first time it happened to me nor will it probably be the last… it is weird but these fixes work…
Same Error in 4.18.1 … A Fix in UE4 would be nice. Something to tidy up structs. I ran often in problems when structs are edited in BPs on compiling and on problems like this thread.
Yes, it works. But a Fix in UE4 would be nice that correct Struct handling. I have to rename my struct frequently. And sometimes also have to delete “Intermediate” and fix other things which are messes up after struct changes.
