I worked on a spreadsheet in Excel 2011 for almost 6 straight hours, saving every 5 minutes or more. This document resided on my idisk. When I completed the spreadsheet I closed out and went to attach it to an email. When I opened the attachment, to my shock all my work was gone! It was as if in was still in the same state as it was 6 hours prior! I rebooted my mac thinking maybe it had cached the old version and even tried downloading it form the me.com site from my idisk but all my work is gone! Where did it go?! is there some kind if excel cache file that stores previous versions or most recent ones? Or one for idisk? HELP!