Propellerhead Reason Update Choppy Audio With Reason 4 Abbey Road Refill After Snow Leopard Update?

Choppy audio with Reason 4 Abbey Road Refill after Snow Leopard update? - propellerhead reason update

I used to live Propellerhead Reason 4 on a new MacBook Pro and MIDI virtual instruments from rough. It is visible, the enrichment package from Abbey Road. The strange thing is that the audio fine during playback of recorded MIDI sounds.

Ideas? This was difficult for month.