(Archived) HELP [Firefox]: Error message

[jaymeh 0]

After I installed the clipper on Firefox I keep getting this message every time I want to acess the URLs in my browser:

jar:file:///Applications/Firefox.app/Contents/MacOS/omni.ja!/chrome/en-US/locale/browser-region/region.propertiesfa

I've tried switching Firefox into safe mode and I either have to disable the add-on (clipper) to get my old URLs back or leave the add-on, exit safe mode and not have access to the URLs stored in my browser's history.

How do I fix this?

Thanks!