Hi Catlover,
I'm not entirely sure if this will help, but if you can, check in your saved game folder.
-- Documents > Electronic Arts > The Sims 3 > Saves > (Your Saved Game folder)
In any of your "ghost" games, is the meta.data file missing? If so, I think I've got something that's worth a try.
I wrote about it in the thread below, but will post it here for convenience and just in case you want to read it.
Re: Can't access files? (Possible Solution)
http://www.carls-sims-3-guide.com/forum/index.php/topic,19030.msg358396.html#msg358396*Possible Solution*
01.) Look in your saved game folder.
-- Documents > Electronic Arts > The Sims 3 > Saves > (Your Saved Game folder)
02.) Open your saved game that your trying to play. Is the meta.data file there? (Trying to compare working save games to games you can't access)
If not, either copy the meta.data file from an existing save or start a new game, go into Edit Town and Save and quit the game, then copy the meta.data file from the new game.
Note: Adding a new meta.data file may change your loading screen. But you can fix that once the game is loaded by saving the game.
03.) Paste the meta.data file into the game that is missing it. Then try accessing your previously saved game.
04.) If you can play it, play the game for a few minutes and then use the Save As option, give it a new name. Then save and quit.
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When Flynn and I tried this - replaced the meta.data file in the current game. Loaded the game to find, Saved game photo was there!! Moused over where the saved game is in the main menu and It's playable!!
Hope this helps,
MrsFlynn