Doktor Avalanche

Musikslayer
chkdsk says everything is fine. I've tried everything else as well. 

 
You actually ran chkdsk /R for all your hard drives from an administrative command prompt? 
 
Cheers..

Yup. 
I've also tried to save as a new project, same error. 

Did you try to bypass all plugins (E), to see if any plugs could be the culprit?
 

Zargg71
Did you try to bypass all plugins (E), to see if any plugs could be the culprit?
 

Yes. I removed all plugins, no luck. I am stumped. 

What are you working with, Midi, audio or both?
 
Bounce any audio clips to themselves (bounce to clip)
Bounce any midi clips to themselves (bounce to clip)
 
Try your export again and report back.
 
 

Bristol_Jonesey
What are you working with, Midi, audio or both?
 
Bounce any audio clips to themselves (bounce to clip)
Bounce any midi clips to themselves (bounce to clip)
 
Try your export again and report back.
 
 

All audio. I bounce all vsts to audio then delete the synth in the synth rack. 

Just as a test, bounce each of the clips to themselves AGAIN after bouncing from vsti
 
Something else to try, do your export without bouncing the vsti's - do it from the midi tracks (just remember to select All (or select NONE))

OK, here's an update:
 
I deleted one track and it worked. Now I gotta figure out why. :) It was a mono track, not a whole lot on it compared to a drum or bass track. Somehow, that track either got "infected" or something along that line. But I was able to export that project with all the other tracks and plugs etc. Any opinions as to why that would happen. Thanks for all the ideas!

We've seen corrupted tracks/busses before.
 
Drag the contents of the track to a new one, duplicate the Fx/Sends/Routing etc and permanently delete the original.
 
If it still screws up it's something to do with the audio clip
 
 

Bristol_Jonesey
We've seen corrupted tracks/busses before.
 
Drag the contents of the track to a new one, duplicate the Fx/Sends/Routing etc and permanently delete the original.
 
If it still screws up it's something to do with the audio clip
 
 

Thanks. Is there a way, other than trial and error, to recognize this? Iv'e never seen it before X3, now I've seen it at least 3 times.  What you wrote makes sense now: I have one project with total silence until I turn off/back on one reverb buss. I'm thinking now that it's a corrupted buss, so I'll just delete it and put in a new one. 

I've seen this back as far as 6.2.1 PE but it must be at least a couple of years since I last experienced a corruption of this nature.