Bogus Permissions Error

Hope someone else has seen this one,

I am using Freehand 7(yes I know its old) and when I open a previously saved file and try to export it as a .tiff file I get the following error after I have select the destination and destination file name:

"Could not save the document because read or write access has been denied"

I can make a new file in the same directory and export from it to the same location as the one above that recieved the error, with no problems, it just seems to be something with my old files. I have checked permissions and attributes of the old files and made sure that my user has full access to the destination directory and I am still getting the error.

Any Ideas? I am sure its not really a rights issue but I am not able to find anything in the knowledgebase so I am hoping someone here has seen it.

Thanks in Advance!