I am experiencing a very weird problem in Excel 2003. Whenever I open a document that was created in Excel 2010, (I have the compatibility pack installed) Excel tells me that the file is in use when I try to save. Then Excel offers to save the file in a different location but deletes the file from the original location. I have tried to copy the files locally to my hard drive, to ensure that I am the only person opening the file, and it still gives me this error.

Other people are not having this problem and I have tried different computers with the same problem. Any help would be appreciated.