Yeah, I had this problem before, only that this happened right after traveling to Shang Simla, and there were no visible promised wishes.
Did you create a backup file before this happened?
If you still have the data for installing The Sims 3, maybe this could help:
Before anything, copy-paste the Saves file from the EA folder to any place where you will remember.
Then uninstall EVERYTHING. After that, install the game as if you just got The Sims 3.
After that, locate your EA > Sims 3 folders.
Now that Saves folder you copy-pasted before? Copy it into the Sims 3 game.
I don't know if this will work, but this helped me with the *Unable to start, reinstall base game* problem.