Input Contract Violation when copying layers
Hey there,
quite the annoying little thing happening out of a sudden
an Input Contract Violation error

followed by

Things that lead to this behaviour:
copying a layer, in any composition in the project.
Steps I already did:
- purged cache
- restared
- reinstalled AE
- tried on different machine - same error
Happening on OSX 10.12.06 with the newest version of AE installed (15.1.1), happened out of a sudden in one project, other projects are not affected.
Of course that happened on a project that is time sensitive, I mean, sure, could not be the other way round.
Anyone got an idea?
Thanks for you help.