Adding another Blueprint Interface "crashes" UE5.0.3

Development Programming & Scripting Blueprint
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1

Hello there.

I’m having an odd problem, whenever I add another blueprint interface to a blueprint actor I get the following problem: The nodes disappear and the node lines start flashing, I can’t edit any of the code. When I try and run the game in editor it tells me the blueprint has compiler errors…

This happens no matter what order I add the blueprint interfaces.

Has anyone ever come across this issue? Is it a bug?

2

Do you have a circular dependency loop in any of the BP interfaces?
It seems to be going into a feedback loop once both are added.

Try creating a fresh empty interface and see if it’s the number of interfaces or the specific combination of these two.

Which version of the engine are you on?

3

I’ve got 5.0.3 (I’m just installing 5.1 to try)

I can’t see any circular loops?

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Created a fresh interface with the same interface as BPI_Shootable, it did not appear to show any errors :confused:

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4

Thanks @3dRaven

It must have been something to do with me “duplicating” the BPI_Interact to create the BPI_Shootable. Created a BPI_Shootable from scratch works :slight_smile: :slight_smile: :slight_smile:

5

I am experiencing the same issue with the same cause in UE 5.5.4. Creating a new interface from scratch also fixed this issue. Not sure if this is fixed in a newer version.