not instantiable

Hi everyone,
I'm customizing ODK for a specific purpose, every things went well even I've ran it as debug mode it worked well, forms submitted. But, when I generate it as signed apk, it crashes before launching and gives me this error:
Caused by: org.javarosa.core.util.externalizable.CannotCreateObjectException: not instantiable

I'm very confused :frowning:

Any help would be much appreciated!

@sheramin - I'm getting this exact same error!

Same situation, runs fine in debug but a signed release apk crashes.

Did you find a solution for it in the end?

Hmm, looks like it's something to do with MinifyEnabled - when I disable that then the release builds run ok..