What steps will reproduce the problem?

1. Load the game
2. Get error

What version of Parrot are you using?

2.17

Do you have an error log of what happened?

Yes, I'll edit later. But there is no such thing as dual specialization in Classic, so that lib can be totally removed from Parrot for Classic.

Please provide any additional information below. (example: localization of your client if not enUS or enGB)

2.17 isn't for classic, sooo