I am having a lot of problems with RealBand 2010 running under Windows 7 (64bit). I installed 2010.5 and found that during playback at slower than normal speed the notation display just jitters and does not advance with the music.
Also there does not seem to be an ASIO driver that functions properly. I have installed ASIO4ALL v2 but this just created garbled output when I enable it. I uninstalled and reinstalled RealBand 2010 (build 4) and Band in a Box 2010. The display jitter problem disappeared but the ASIO driver still fails. This forced me to use MME drivers, I adjusted the latency for both sound and display for normal speed but when playing back at slower speeds (50% for example) the display is very early compared to the sound. This makes the program mostly useless for picking out and learning faster portions of songs, something I did a lot of on the older version of software and windows XP.