After Hot Reload, "Could not find a function named..."

Development Programming & Scripting Blueprint
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1

I have a custom C++ component, BeatemupHealthComponentCPP, with a method BasicTakeDamageHit. BasicTakeDamageHit is a BlueprintNative event and is setup like so:

UFUNCTION(Category = Health, BlueprintCallable, BlueprintNativeEvent)
void BasicTakeDamageHit(int damageAmount);
void BasicTakeDamageHit_Implementation(int damageAmount);

I have a call to this method in the level blueprint for debug purposes, and everything works correctly when I initially boot the editor. However, if I edit the C++ project in visual studio and rebuild or do a hot-reload in the unity editor, there’s a chance that the editor will no longer recognize the method. The node where I call it gives the error “Could not find a function named ‘BasicTakeDamageHit’ in ‘BeatemupHealthComponentCPP’. Make sure ‘BeatemupHealthComponentCPP’ has been compiled for K2Node_CallFunction_1”.

What might be causing this error? Is there a way to fix it?

2

Hey, currently having this problem,
did you found a fix ?

What is funny is that it’s always the same method of a particular component that cause problem

3

Got the same problem after hot reloading

4

Does Refresh All Nodes (under the file menu in the blueprint editor) fix the problem?

5

no, it refreshes everything, but the error stays

edit: it seems like only two blueprints are affected at the same time. i started to work on the project again and after making a few changes, one of the two affected classes changed to a recent edited one.

6

If it works as expected on first load and not after the hot reload I’d suggest moving this to bug reports.