Upgrade of Forum crashed PP
Some time ago I paid IPB to upgrade our Forum. After they finished the PP Gallery was corrupted. I hastely replaced the Forum php files with the older version and used the backed up database (common to both) to restore PP. Now, almost one year later, I have successfully upgraded the Gallery from v4.8.2 to v5.2.1 and I am about to try to update the IPB v1.1.2 to v2.1.4. Is there any reason why I might be unsuccessful again? Is there a 'fix' that will help achieve a successful upgrade?