I just got an error while trying to quick save: "ERROR SAVING THE GAME! The system encountered an error. Try saving again. Error DELDIR."
I'm about 9th level and have had no problems till just now. It occurred near the oasis in Northern Crakimir (sp?). At that time, I couldn't even save manually either. As a matter of fact, when I pulled up the save screen none of my saves were visible. The save game graphic frame was there, and the blue bar that normally highlights whichever save you're selecting, but there were no visible saves. With desperate hope I continued the quest, and returned the water to the tree.
Still couldn't quick save, but when I pulled up the save screen I tried clicking on one of the invisible lines where a save should have been and it allowed me to save. Whew! I've found that I can restore to any of my old saves (accept the quick save slot, which is still not functioning for saving or restoring) but they still are not visible. They're like ghost saves, if that makes sense.
Any suggestions? Should I fear further corruption of my saved games?