Steinberg C1 and Live

I’m using Steinberg C1 with Ableton Live. After installing mavericks, I discovered the stein berg sound card didn’t work with Mavericks. I deleted that installation and reinstalled mountain lion. With the announcement that a C1 patch that worked with OS 10.9 was available, I installed Mavericks, downloaded the new driver.

The Steinberg sound card doesn’t work with Live in OS 10.9. The sound stutters and constantly cuts out. I have similar problems playing tracks with iTunes, and with audio on web browsers. Thoughts anyone?