How long ago did you have your addons?
If it wasn't that long, you can still retrieve deleted files.
See, the way computers 'delete' files is by changing a bit before the part of the file to mark it as overwritable and make it seem empty.
So it leaves a residue you can still read with certain programs, as long as you haven't overwritten it yet.
I suggest trying to recover it with
RecurvaHope this helps!