Yes, my computer has Vista as the OS. I installed it about 6 months ago and, to date, have had no problems.
Todd: I tried posting an image to both my 750gb My Book and an internal 250gb drive and neither worked. Got the same old message as before.
I just tried exporting a file to a test folder on my c:drive and it worked. That seemed like a miracle.
I don't know how to post a screen shot of the export box as it won't copy & paste.
Rich: There is enough space on both XHDs that I've tried, my 250gb has only 18gb used and and my 750gb still has 175 free.
I emptied the recycle bin, so that isn't the issue.
As far as permissions go, I checked Security on both XHDs and all permissions are checked. Surprisingly, I checked Security on my C:drive and a category called "Authenticated Users" was highlighted, but nothing was checked (this computer was originally set up with my wife's to share a printer, so that may be why the Authenticated Users was checked. I tried highlighting another category that shows all the boxes checked, but when I click okay, it doesn't hold. It always goes back to the Authenticated Users group. I don't know if this is a factor or not, as all my other programs have worked fine before and to the best of my knowledge (which may be limited), I've never had a permissions problem.
So I'm not sure what all that adds up to. I've tried setting the export box a variety of ways and always get the same "Export Failed"message.
Thanks for your thoughts. Even though they haven't panned out, it's given me more factors to eliminate.