Problems opening one of five sessions

[PascalShin]

When moving five different complete pro tools session folders from Pro Tools 9 HD to another computer running plain Pro Tools 9, I get an 'integer error occurred (divide by zero)' error and an 'access violation occurred, unable to read location: 0x00000000' error when opening Session 1. The four other sessions will open fine.

Is this possibly to do with a setting on the original Session 1 that is different to the other 4?

Also, Session 1 is much larger than any of the other sessions at about 15GB. The next nearest is 6GB. Could this have anything to do with Session 1 not opening on the non-HD system?

Both machines are running 32-bit Windows 7.

Any help would be greatly appreciated, thank you.

[cwsand]

Have you tried making a new session and importing the session data?