Well it crashed when I used the Popup message object and the fast function object.
It also crashes sometimes when you open games saved with the previous build.
Other than that I've found it pretty stable. Though it has trouble with rendering strings (they're always off by a few pixels) & can't use some features like 'Grab desktop at start' or transitions.
I use the cracked MMF2 version that cannot update after build 241
and I cannot check HWA and any other changes after 241....
I have to wait two more weeks in order to buy the MMF2 DEV
because my new VISA has not been activated yet...