User is running Windows XP and MS Office 2007. When she double clicks on Excel files, either locally or on a network drive, Excel opens up with a blank screen instead of opening the file. Most, if not all options are greyed out. The only way the user can open Excel files right now is by first opening Excel and then browsing to the file and opening it that way. Anyone know of a fix? I checked the hide/unhide and it is greyed-out. I also unchecked the "Ignore other applications" in Tools>Options.