EnvelopeFollowerListener Component Removes Itself from Class on Editor Restart

Development Programming & Scripting
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1

Using 4.27 and have been using EnvelopeFollowerListener components successfully in this project for years. The editor crashed unexpectedly the other day and, upon restarting, one (only one) of my classes which used the EnvelopeFollowerListener component had all the links broken. Variables (including a SourceEffectEnvelopeFollowerPreset type) were reset to ‘object’ types and I got the following compiler error:

NPC EnvFollListener
NPC EnvFollListener1548×343 62.8 KB

I deleted the references and built them again in the blueprint, compiled and tested everything worked as intended. Then, I restarted the editor and everything was broken again. Other classes which use the EnvelopeFollowerListener are fine and I can create new classes with it, but this one particular class (NPC_Base) won’t allow me to add it in any way, that survives an editor restart.

What can I do, besides creating a whole new NPC_Base class from scratch?

Thanks

2

Well I just spent all morning building a new NPC class and the editor crashed again and the same thing occurred on the new class.

EnveloperFollowerListener keeps corrupting itself. This is absolutely maddening.

3

I’ve verified the engine installation through the launcher, deleted the ‘Intermediate’ folder, ‘Generated Visual Studio project files’, rebuilt the project in VS and it’s had no change.

What else can I try?