My Octatrack is having this problem constantly actually. Interesting to hear that others are having the same issue.
I'm also often getting an error saying "some errors occured while writing data to card" so I'm wondering if my card when I (which shipped with the OT) is defective? That one happens when I try to restore the backup of the project. Either way, its a bit of a worry.
Also, I can't get a single sample to load without errors and it keeps asking me to mount a set, even though I've already selected one... Is it user error or do I have a dud machine
?
EDIT
Also, when it asks me to mount a set, it's often not finding the presets set that I've been using to store everything... Evidence of problem with the card do you think?