This issue appears to be specific to the Palm T3 and seems to only occur if you in interrupt syncing from Windows Media Player when Pocket Tunes is in MTP mode. It appears to be a bug in the USB driver of the T3.
The error message commonly seen is:
Fatal Alert
PXAUsbIO.c, Line:183,USB
Globals NULL.
Our recommendation is to avoid interrupting (stopping) the sync if at all possible. Currently there is no fix for this issue.
Please contact NormSoft support if you have any questions, http://www.pocket-tunes.com/scripts/support.php