This message suddenly appeared when I tried to open Photoshop CS3 (Vista 64 bit) today together with advice to unlock the file using the 'properties' tab in windows explorer. Prior to today Photodshop was working fine and the only thing I've done since I last used it is to update Cammera Raw to 4.4 - reverting to to 4.3 makes no difference.

I can't see anything in Windows Explorer that does this. But ticking 'run this program as an administrator' in the 'compatibility' tab part resolves it - it allows the program to open but only after presenting me with a 'do you want this program to run?' dialog box each time it opens.

At least I can use it but is there a proper solution for this?

I searched the knowledge base but all I can find is reference to a similar problem with the Mac version.

Thanks

Jeff

Reset Prefs.

<http://photoshop.blogs.com/photoshop/2005/10/eileen_writes_p.html>

Thanks Lawrence

That's sorted it.

In resetting the preferences after I realised the cause. I'd installed an eSATA MyBook external drive and in the process changed the designation of my existing scratch drive.

Jeff

:-)