Christine; I don't have CS2 but PS usually asks you to save the last image on which you were working on before letting to close the program. Just a measure to make sure you have not lost your work. Make sure you close all images on which you were working and then try to shut down. See if this works. Otherwise a corrupted .dll or partially deleted files could be the cause if you have recently installed / uninstalled something.
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S a s s a n .
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"No one is going to take our democracy away from us. Not now, not ever.
" JOE BIDEN
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