I had my check for add-ons compatibility disabled but it recently stopped working.
To fix this instead of using this:
you can use this:
As always, do not use this for stable releases as a workaround because one of your add-ons has not yet been updated after a new release. Doing so might make your new Firefox not to work as expected.
This work by Zambrano Gasparnian, Armen is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported License.