Thanks, enabling studies worked after a few minutes. I restarted FF and everything is working (temporarily) okay. There doesn't seem to be any conflict when used in conjunction with above mentioned temporarily enabling extensions.
I've been using this page's advice until the certificate is repaired.
1: Temporarily loading extensions
Extensions installed via Firefox's debugging tools are installed "temporarily", meaning they will be automatically disabled again on browser restart.
All of your extensions currently reside...