Rickety Bridge

I have downloaded Bridge which worked once and not again. I uninstalled it and re-installed and again it worked once and not a second time. I closed the computer and when I opened it the following day it worked perfectly. However, the next time I tried to use it it would not open. Bridge does work if I open a raw image in Photoshop but I cannot browse bridge and I cannot see the the thumbnails in Photoshop for the raw images or psd files.