JaBB ver1 compared with JaBB ver2 (both for kontakt)

What are the differences between JaBB -ver One and -ver two?

I heard that JaBB ver ONE is broke when used in K5.

How 'broke' is JaBB ver _ONE_ when used in K5? Broke how? (Please explain.) Just EQ'ing and CC1 --'mod'-- issues? (I undo all that anyway --I edit well with K5.) Or is it more profound problems? Are the sample 'wav' files themselves okay in ver ONE? Are all the instruments there (eg GM drums--_incl latin_, guitar KSw layers); and mutes too?