Version Compatibility (URGENT)

Question

Hi I have the latest version of .net in my office and an old version that is 2002 at my personnal computer. Now when I amtrying to work with the office data at home I am not able to work. Is it because of the version. Please help me out as to what I can do for this. I tried to make new workspace and copy the contents of the files into the files that I made at home but still I am facing problems. Please help as to what I can do for this. regards Tellie