I have several excel files on my desktop that I open on a regular basis. I moved them into a folder on my desktop but I cant open some of them now, while others are no problem opening. On the ones I cant open I get a message: "Excel couldn't open that file. Rename the file to use a shoarter name or copy it to a different folder with a shorter path." If I move the same file back to my desktop, I can open it easily. Not sure what to do