Firebug keeps randomly stopping in ExtJS

Question

ExtJS 1.7.3 on FF 3.6 ² keeps stopping on this line 9863, every time I load my page:

9860 try{
9861 var ssRules = ss.cssRules || ss.rules;
9862   for(var j = ssRules.length-1; j >= 0; --j){
9863     rules[ssRules[j].selectorText.toLowerCase()] = ssRules[j];
9864   }
9865 }catch(e){}

just as if I had set a breakpoint. Pressing continue (F8) and everything goes on, just like with a breakpoint. But there 100% certainly is no such thing...

Huh? Anyone has any idea?

² no, I don't want to upgrade, I need to test under this configuration.

Answer 1

I had this problem and fixed it like so:

1. Uninstall firebug in the firefox add-ons manager
2. Close firefox
3. rm -rf profile_folder/firebug
4. Delete all firebug-related lines from profile_folder/prefs.js
5. Reinstall firebug

Hope this helps!

Answer 2

When you say "stopping", do you mean in Firebug or something? If so, do you just have break-on-exception enabled?