I've been enjoying the new zoomable preview (as mentioned in a separate post), and the apparent enhancements to 3rd party widget overlays in the preview window.
Until I tried to look at a project that uses full Mocha Pro ofx ...
It seems to be broken. Existing project with an Insert effect does not show the insert, for example, and trying to launch the Mocha Pro interface basically just results in a spinning timer and eventually the infamous Windows "This application has stopped responding" dialog
I'm going to try some more tests