Hi,
The app modules Mozilla Enhancements add-on relied on are now gone in NVDA alpha builds as part of a cleanup effort to remove outdated code in NVDA, as these app modules were used in the day when NVDA needed some workarounds to let users use Firefox and Thunderbird more effectively.
Cheers,
Joseph

-----Original Message-----
From: nvda@nvda.groups.io <nvda@nvda.groups.io> On Behalf Of Bob Jutzi
Sent: Tuesday, August 4, 2020 11:26 AM
To: nvda@nvda.groups.io
Subject: Re: [nvda] Error when using the latest NVDA Master with the Enhanced Mozilla Add-in

Sorry if this was previously addressed, but when running both V1.10 of the Mozilla Enhanced add-in and the latest NVDA Master, I am getting an "error in app" when launching Thunderbird and Firefox. I tried both V11 and the newest developer release of the add-in which result in the same error.

Bob