If the problem is hard-drive related, I strongly recommend getting GRC's 
SpinRite. It's a low-level disk repair utility and has saved my bacon on 
more than one occasion.

http://www.grc.com/spinrite.htm

I'm not sure if it would work on an external drive (if it's though a USB 
interface). If the files are on your office PC, I'd suggest scanning that 
drive.

Regards
Keith


> Hi Framers,
> 
> I've read a few threads on this in the archives but didn't get how 
> they could help solve this problem.
> 
> Using FM 9.0p255 on a virtual PC, Windows 7, via Parallels.
> 
> I have a set of well-established files on an external HD that I take 
> between home and office to work on the files regularly. Yesterday, 
> one file generated the dreaded "unknown file type" error and nothing 
> seemed to open it. Because I'd had a modem power supply go bad around 
> the same time as I last worked on this file (at home), I accepted the 
> corruption and was able to restore the content from other sources 
> into a new file.
> 
> Today, a different file that was fine yesterday afternoon at home now 
> generates the same "unknown file type" error at the office. And this 
> file I don't relish reconstructing. The result is the same whether I 
> double-click from the Mac, open from the Windows desktop or folder, 
> or choose File>Open in Frame. From the Mac side it looks like the 
> permissions are OK; don't know how to check that on the PC side.
> 
> I'm concerned that the problem is random and could affect any file at 
> any time--I can't back up every file every minute without seriously 
> slowing down my/the computer's efficiency and compromising my 
> already-tight deadline.
> 
> Are there any solutions to this problem? Something I missed or 
> misunderstood in the archives?
> 
> Thanks for any insight,
> Karen
--
Keith Soltys
Senior Technical Writer
Architecture
TMX Group
(416) 947-4397
http://www.tmx.com/

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