After spending 2 hours to install Cubase Artist 7.5, and then two days trying to get it to record my guitar through my RP355, I thought I might share what I found. The Digitech ASIO driver for Windows (7) didn’t work and after switching to the ASIO4ALL driver, everything was fine. I hope this can save someone some time and aggravation.
If this post is of any help to you please let me know!