Make sure that PS is set as the primary for the file extension which you are using :
To set that go to preferences>File type/Editor, select the files extension from the list and then add PS under the editor category.
If the above steps are already tried then you can try to reset the preferences:
To do so refer the following link:
@careyonadobe, To add to Harshit's response, another thing you could try doing is not to use the 'Preset' list of editors to choose 'Photoshop'. Instead, click on '+' sign as shown in my screenshot below, browse to Photoshop location, select the .exe or .app file for Photoshop from your hard drive. See if it helps.
Thanks very much for the tip--sorry it took so long to thank you. I can
launch it, DW doesn't seem to remember the preference. I will just deal
On Tue, Mar 5, 2013 at 8:36 AM, Sudarshan Thiagarajan <
Thanks for the tip and I was able to search for the exe and launch, but DW
doesn't seem to remember my preferences
oh wellthings could be worse.