Has been working great for me

I do non-standard rendering of 2-5 hours of lectures per week so need Compressor to go with FCPX. Earlier versions of Compressor would frequently hang, and the only way I could ever get it to work reliably was to export from FCPX as “Share Master File” and then run Compressor on that, which was a tedious process. I’m happy to say that the latest Compressor integrates perfectly with FCPX, has been rock-solid, and saves me 2-3 hours a week processing.

talmy0 about Compressor