I was able to replicate this issue in both 4.0 and 4.01. Here are pictures of the error message on the Kemper.
[Blocked Image: http://i1363.photobucket.com/albums/r704/jimmyrage/EAA38E87-7DCA-48F7-8057-20DF8476C9F4_zpsze2gp4wz.jpg]
[Blocked Image: http://i1363.photobucket.com/albums/r704/jimmyrage/78E386BF-3505-4A7C-911D-C5E6F728DAB2_zpsce6kt3s6.jpg]
problem occurs when trying to copy an FX in the parallel path and paste it in a parallel path slot.
the error messages are distinct, so I don't know what is happening. One is from 4.0, the other from 4.01.
my first crash ever on the Kemper.