This doesn't look good... Another thought: do you have Time Machine (or similar) functionality enabled in your OS? If so, you could try to restore a previous version of the wallet file. Otherwise you may want to contact ThomasV (lead developer of Electrum) and ask for help.
I don't have any automated backup software enabled. I am in contact with Animazing right now who helped on Electrum ( although I think he only helped with GUI :| ) but I think going to the lead dev would be a good suggestion.