Hi Jacque

It sounds like the SCORM may be reaching a limit (around 4096 characters) of data being stored to keep track of data between user sessions  so the user can resume where they left off in the same attempt in the SCORM.

If you look at the track data fro the attempt is there a lot of data showing under cmi.suspend-data

If this looks Ok then have you uploaded a revised version of the SCORM ?

Regards