Sequences are freezing

I checked the site and didn't find a post, so here it is.

I loaded a program today, my most recent tracks. Everything loaded fine, but when I tried to play a sequence it stopped at .23 sec's in. I tried reloading both by folder and going inside and loading by prog, same thing. I tried to load another disk, same thing. I was still using OS2 1.01, everything was working fine, no need to change. I upgraded to 1.10, same thing. This happened before but it was only with certain proj, everything else worked fine. I though possibly the file got corrupted while savingbecause the other songs in the proj worked. At that time I was using 4.98. does any one have any suggestions? Has anyone had this problem and resolved it? I'd appreciate any feedback.

Found the issue, it was in slave mode and cubase wasn't up, once i took it out everything was good. i don't recall other recordings having this problem though.
I guess somehow it was saved in memory..... i don't know, sh%t's working now. Still didn't work with the old prog.