Hi Florian,
I have tried it on an old mac i have as well, which never had the MT trial version installed, but the same problem occured. On the mac the MT app opened without problems so the license seames ok, but after uploading i get the same issiue of the I also tried to reinitialize the bomebox itself. But neither worked, so maybe its something with the license as you reffered. Just saw your message now, will mail and let you know if its solved.
OK, I’ve identified the cause (and it’ll be fixed in the next firmware update). For now, I can fix it by re-generating your license key.
Again, my apologies for this unexpected problem.
Best, Florian