Hi all.
To enable incompatible add-on on Nightly / Aurora disable extension compatibility check. To disable extension compatibility checking on trunk builds:
A) type in about:config in the address bar.
B) Click “I will be careful I promise”
C) Right-click in page and choose New
D) Choose Boolean
E) Type in or paste extensions.checkCompatibility.nightly
F) Set the value to False.
For Aurora use extensions.checkCompatibility.aurora.
There. Problem solved.
Regards.
Andy