Getting the same problem again, this time with multiple recorded audio tracks, no MIDI. All record fine, all play as normal, added effects and such. Saved as normal and closed X2, now those audio tracks are lost and show up as silent tracks. Getting fairly annoying now having to re-record everything.....this is the first project I've ever had such a problem with.
*EDIT* When I pull up my project library outside of X2, all the missing files are there with all the regularly recognized files in the projects Audio file, just for some reason X2 doesn't recognize the new files.