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UObjectLibrary cannot assign blueprint objects


I am experimenting with UObjectLibrary and I think there might be a bug with assigning blueprint actors to such object libraries.

I have created a UObjectLibrary in my content browser. Then I select Actor as the base class and enable the flag that it can include blueprint classes. Then I save my object library. I now try to assign a blueprint which is derived from Actor to my object library but it fails to do so. It simply doesn't assign anything in the object browser.

If I do the same with simple Texture2D or StaticMesh (with blueprint inclusion disabled) then I can assign resources without problem to my object library.

Is this a known issue or not an issue at all ? Am I not understanding this properly ? The documentation on object libraries is quite scarce.

Product Version: UE 4.10
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asked Jan 24 '16 at 03:42 AM in Bug Reports

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I have been able to reproduce your issue, and have entered a bug report (UE-25960). Thank you for your report. I will provide updates on this issue as they become available.

Have a great day

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answered Jan 25 '16 at 09:35 PM

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Sean L ♦♦ STAFF
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avatar image Chrys Jan 29 '16 at 04:32 AM

okay thanks, how can I follow the evolution of this bug report ? I really need this as soon as it is available.

avatar image Sean L ♦♦ STAFF Jan 29 '16 at 01:33 PM

Unfortunately, we do not have a way for the public to track bug reports at this time. However, once it has been resolved, I will ensure to come back and let you know.

Have a great day

avatar image Chrys Mar 17 '16 at 05:47 AM

any news on this ?

avatar image Chrys Mar 17 '16 at 05:51 AM

I found some more info that might help.

in C++ create a class called UMyObject derived from UObject. in C++ create a class called AMyActor derived from AActor; add a UPROPERTY of type UMyObject* in AMyActor.

in the editor Create a Blueprint based on UMyObject in the editor create a blueprint based on AMyActor

in AMyActorBP try assign the UMyObjectBP to the property. it wont work.

now in AMyActor change the UPROPERTY to be of type UObject*. now in the editor try assign the UMybjectBP and it will work. This looks like a similar bug to me than the one with the UObjectLibrary.

seems like if the types arent CoreTypes then assignment via content browser isn't possible.

avatar image Sean L ♦♦ STAFF Mar 17 '16 at 01:52 PM

Thank you for providing the additional information. This issue has been fixed internally, and the fix will be available in a later version.

Have a great day

avatar image Chrys Apr 07 '16 at 05:14 AM

Is this fix included in 4.11 ?

avatar image Sean L ♦♦ STAFF Apr 07 '16 at 12:47 PM

This issue has been resolved internally, but the fix will not be released for 4.11. Look for this fix to be implemented into a later engine version.

Have a great day

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