From the appdb:
-----------------------------------------------------------------------
* SAVE FOR WEB Solution* : Well, after a fair amount of trail-and-error testing, I have FINALLY found what WILL or WONT allow Save-For-Web to work... It actually is how you execute Photoshop.exe ... if you try to run it with forward slashes in the path, Save for Web will NOT work. If you execute with backslashes, Save for Web WILL work.
So...
Save for Web works with: wine "c:\program files\adobe\Photoshop 7.0\Photoshop.exe"
Save for Web WILL NOT work with: wine "c:/program files/adobe/Photoshop 7.0/Photoshop.exe"
Enjoy! Hiji
-----------------------------------------------------------------------
I don't have Photoshop here, but perhaps we should ensure that argv[0] and equivalents always use backslashes?