Did you reinstall the patch
Some re-release versions of the game may already be updated to the latest 1.0034A version, as shown in the bottom right corner of the main menu, so would not need to be patched.
Could you maybe have copied it back to the wrong location by accident? It should be '..\Divine Divinity\Run\savegames
'. If you zipped the save folder before uninstalling and extracted it afterwards, there may be an extra folder in the path (ie '..\savegames\backup\<save folders>').
If you start a new game and save, does that show up properly, or get the old saves displayed?