New
#11
One thing I did previously before the latest clean install of 7 was backing up the user acount as well as source mod folders over to another drive and one or two mods had to be redownloaded to see them run again while the fresh install of all Steam regular titles have had no problems.
If you create a new save at the beginning of each game map those can be backed up while dumping any duplicates found. You would simply replay to those particular points to save again later anyways while keeping the start of the map type saves.
Another though that came to mind if it would work would be taking ownership over the designated folder in case the System Admin's protection over the user folders is hampering things in any way. Since this is an odd problem I had to think of odd causes since generally the system denies access to certain folders as a rule when browsing the drive. If the game installer created the sub folder under one of those that would explain the error.