Update to Firefox 18 makes pads unusable

With the last Firefox update to V18.0.1 all the pads become unusable. IE still works. Seems to be an etherpad problem, as all admin pages work properly.
Here the full error message that comes after trying to load the pad:

An error occured
The error was reported with the following id: 'gJOmE2IIArfOBcfmAilG'

Please send this error message to us:
'ErrorId: gJOmE2IIArfOBcfmAilG
UserAgent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:18.0) Gecko/20100101 Firefox/18.0
Script error. in http://clf-orga.primarypad.com/javascripts/lib/ep_etherpad-lite/static/js/pad.js?callback=require.define at line 0'

A fast fix would be heavily appreciated.

Thanks
Jan