Adrian Kalla contributes his first unofficial MAC-build — great!
For your tests please consider that this Build might contain several Regressions compared to SeaMonkey 2.40!
Only for testing, you will use those builds on your own risk. I recommend to create a backup of your user profile before you start testing those builds. Please consider that it even might be impossible to use an existing User Profile after downgrade to an earlier SeaMonkey version if you have used that Profile with a Nightly.