Problem renaming files. Bridge will not accept names that are pasted into the file.

I am copy/pasting names provided by a client into thumbnails in Adobe Bridge.

Every so often, Bridge refuses to accept a file name and I get the following message:

"This file cannot be renamed (my file name) because the name contains characters reserved by the system. Please choose a different name."

The only characters in the names are letters (upper and lower case), numbers and underscores. Nothing else.

What's more, if I type in the name (instead of pasting it) Bridge accepts the name. Finally, if I reboot Bridge, it accepts the pasted names for a few files and then the problem starts again.

Looks like a bug to me.

Any suggestions?

Thanks.

D.