Migration from InterScan Messaging Security Suite (IMSS) 7.0 Linux to version 7.1 fails and the following error message appears in the migration log file:
Can't find semicolon in string(13)
This issue happens when you only select the Do not intercept messages action in "Encrypted messages (unscanned)" and "Messages with password protected zip files (unscanned files)" rules in Scanning Exceptions.
This is actually a bug in the migration tool. To resolve this, download the latest migration tool which contains the fix to this issue.