IN PS CC, Mini bridge will not open. Dialog says>
"Bridge encountered a problem and is unable to read the cache. Please try purging the central cashe in Cashe Preferences to correct the situation."
I cleared cache for the folder I am in, and now I see blank boxes for the images. The full version of Bridge works, but not mini bridge.
Have you tried closing the MiniBridge panel, quiting Ps and then relaunching? The component that Ps and Br use to communicate with each other may be in a bad state. IIR, quiting Ps should quit that service as well.
What OS are you using?