For those having Problems! Rated 5 out of 5 stars

1.Restart as directed after install,then restart again to ensure the add-on compatibility checking was disabled.

2.If you want to use and test your incompatible add-ons, this is "important""DO NOT ENABLE" the add-on compatibility checking in the warning dialog in the Add-on window by accident.

3.To disable add-on compatibility checking onced enabled, type about:config in the address bar and press Enter.

1. Do Filter Search: extensions.acr.firstrun
2. Set Value to: True
3.Then restart twice as you did in step 1.

This review is for a previous version of the add-on (0.3).