Hi Donny
Apparently not according to Antony over on the korg forums. I asked over there.
He's had no problems with any of his, all sizes up to 128 gig. Pete seemed to think it may have been brought up before.

A couple of the smaller sticks I tried formatting on pa 4x, but I can't afford to do that with the 128 gigs. I run my biab audio files and sample tank files off them, don 't want something going wrong.