Serialization error

Why I see this error?

UE4Editor-Cmd: [2017.03.13-11.20.09:441][ 0]LogScriptSerialization:Warning: Error: Unknown bytecode 0x3C; ignoring it

Hmm… it happens when I create Map(dictionary) locally, is it bug?

Same here. I create a map in my BP and now I see this error and it slows down loading it seems

Same here. I create a map in my BP and now I see this error and it slows down loading it seems

I hope this helped you

It turned ouot I could do what I wanted to do without maps so I dropped the maps from my BOP again and the error is gone

I have the same issue with a Set of custom Enum which is a local variable of a function. It is also an input pin of another function.

I prevents the project from being packaged (4.15.2, Windows 64 bits).

I have the same error but with “Unknown bytecode 0x3A”.
Replacing the Set with an Array fixed the issue.

That is very bad if it prevents packaging. there should be a bug report. Will you report this as a bug?

I have done this.
https://answers.unrealengine.com/questions/597717/serialization-error-1.html

Thanks, I don’t use maps now but they sound like a useful concept. I would hate to find a useful situation for them and then not being able to use them because of this bug