The newest driver wasn't particularly stable on the machine I tried it on. I worked around it in our code and indeed the driver loads and works fine after that. The 32 bit driver string is shorter and so doesnt run into this problem. Since the 64 bit driver string for the fast track exceeds 32 characters the string comparison fails and SONAR never sees the device. The code that tries to open the drivers compares the driver name string with 32 character string. The problem is caused by a bug in the ASIO sdk. I tried this and indeed the X64 drivers do not show up in SONAR.
