Dreamviewer CS5 opens but shuts down right after first view again and again...without no error information.

I have Adobe Premium CS5 for MAC. My Dreamviewer CS5 opens but shuts down right after first view again and again. With no error information.
I have tried to download it again (web download link) with reopening the computer, but still it does not work.
Do I have to download other programs to get it work? Other graphic and web programs open and works properly.
What to do?