OMG absolute disaster using this new format ! Crashes and locks all the time, cannot not even open add on without trouble.

Hi,

This is the simples option, not always help but we encourage to try. 

- Copy and paste in address bar about:support  
- Select following http://nimb.ws/Vm5pjy 
- Rename this folder to any name and restart Firefox http://nimb.ws/awxfuW BUT don't delete it. Just rename. 

If it won't help, let us know.