I'm the Information Technologist for a manufacturing company and have a Dell workstation running 32-bit Windows 7 and MS Office 2007. When the user attempts to open a particular Excel file, Excel complains that the file is corrupted. Yet other employees running Excel 2007 under either Windows XP or Windows 7 have no problem accessing that file. I've researched this on the Net and discovered it to be a rather common problem --- yet I cannot find its solution! I've run the MS Office Repair utility; confirmed that the Excel "Ignore other application" option is unchecked; tried the "regserver/unregserver trick; and re-saved the file from another machine. Nothing works. Can anyone supply a fix?