Talk:Tutorial: Troubleshooting/@comment-50.188.189.79-20150816094039/@comment-1820055-20150825104546

very late reply but this seems to be from one of your firefox add-ons, I'm researching on porting KC3 to firefox and the library names seem similar, especially with nsIWebProgress. try to disable your add-ons

also, firefox uses chrome:// and the "chrome" term themselves, since chrome actually refers to the interface, and not google chrome