A few things to try.
1)Since jpg's are finiky with bit modes, make sure your mode is in 8-bits per channel only. (found in the image>mode menu)
2)you could try resetting the preferences by using the 3 modifier keys at startup. ctrl-alt-shift(windows) cmd-opt-shift(mac) Hold these three keys down when you start photoshop if done right when photoshop starts you should get a dialog box asking if you want to reset the preferences)
3)If these do not help specify the version of photoshop, what OS you have and its version. Then someone can tell you the location of the preference files since it is different on windows vs. a mac.
Thanks for your quick reply which I appreciate.
1) 8 bit already set so that is covered.
2) tried this so many times its not funny, I get nil response, nothing, no matter how fast or slow I cmd/opt/shift the instant I opened PS, no dialogue box appears.
3) sorry but all I know is I have CS3, genuine Adobe of course - if you have a tip on how to dig down to its version that would be great. OS is Mac OSX Lion 10.7.5
Many thanks again.
In photoshop when using the Image Processor you pick the folder that the jpegs are inside of, not the individual files themselves.
If you want to pick the individual jpegs you can select them in bridge and then go to Tools>Photoshop>Image Processor
That small distinction made all the difference …problem solved! Thank you so much for your help. Thanks to all who replied here.