Tracktion2 locks up my Korg Karma

[Mauvehead]

I am wanting to use Tracktion2 as a "Master" and various outboard gear (Korg Karma, Electrix Filter Factory, Roland MC-505 Groovebox, Roland EF-303 Groove Effects, Roland V-Drums, Roland VS-1680, etc) to sync up as "Slaves". I have scoured the Tracktion2 manuals and enabled MTC and MMC for the job. The Korg Karma will start when I hit start in Tracktion2 but then the Karma freezes up once I hit stop in Tracktion2. It literally locks up and then I have to power up the Karma again which has never happened before. I've used MMC extensively in the past to sync up my VS-1680 with all of the above mentioned gear and never ran into any problems. Basically I want my external gear to follow the Tracktion2's transport controls. For example if I scroll ahead to measure 19 in Tracktion2 then I want everything else to go to measure 19 as well. Any suggestions? Am I overlooking something in Tracktion2? Thanks!