As you know that it's a plugin that causes the crash it would now be helpful to know, which plugin of those three crashes. Thus you might have to disable one add-on a time and restart firefox.
First go to Tools > Add-ons. Right click an entry under 'Add-Ons' and click 'disable' in the context menu entry. Restart Firefox.
Then try again to access a https web site.
When you know the add-on that crashes, go to the appropriate web site of this add-on and report the issue there.
First of all: I'm not a developer.
As you know that it's a plugin that causes the crash it would now be helpful to know, which plugin of those three crashes. Thus you might have to disable one add-on a time and restart firefox.
First go to Tools > Add-ons. Right click an entry under 'Add-Ons' and click 'disable' in the context menu entry. Restart Firefox.
Then try again to access a https web site.
When you know the add-on that crashes, go to the appropriate web site of this add-on and report the issue there.
Adblock Plus: http:// adblockplus. org/forum foxyproxy. mozdev. org/drupal (Section 'Bugs').
FoxyProxy: http://