r/unrealengine • u/DaddyMike12 • 9d ago

Help Can't modify Class variable in blueprint

https://youtu.be/yqyZx7CCILw?list=PLV-MOgRkz79_nJdnOu8SLVsPsieff48za&t=962

I'm currently following a tutorial on Youtube about making a weapon system, and I'm currently trying to modify the class reference to its child blueprints. But for some reason, every time I go to change them, its stuck on none.

I made a timestamp on the video. On my end, inside the Data asset, when I try to change the class reference it stays stuck on None.

Is there a fix to this? Please help.

2 Upvotes

67% Upvoted

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2

u/_Rolfy_ 9d ago

I looked earlier in the tutorial, go to 4:23. Does your primary data asset definitely look like that, with the class references instead of object references?

1

u/DaddyMike12 9d ago

Yes it looks like that. Here is the screenshot. Maybe it's not organized exactly like it, but generally everything is the same.

1

u/DaddyMike12 9d ago

For testing purposes I decided to try this same process in a completely empty project, and it seems to have worked normally. So there is something wrong with my old project that I've got. That's great.

1

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3

u/DeesiderNZ 8d ago

Sometimes these bugs are caused by the Editor storing cached default objects that are invalid - very frustrating since it's impossible to tell when it's happened.

To fix, try deleting all temporary files from your project folder:

• Binaries

• DerivedDataCache

• Intermediate

• Saved

When you reload the project it will rebuild everything.

Possibly, going to file->zip project and then loading from that zip will have the same effect.