#1 nvstusb_set_rate: Assertion `rate > 60' failed.

[tahallaan]

$ ./example
nvstusb: libusb initialized, debug level 3
nvstusb: Found NVIDIA 3d stereo controller...
nvstusb: Found 4 endpoints...
nvstusb: forcing vsync
nvstusb: GLX_SGI_video_sync supported!
nvstusb:selected vblank method: 1
Vertical Refresh rate:-nan Hz
lt-example: nvstusb.c:181: nvstusb_set_rate: Assertion `rate > 60' failed.
Keskeytetty

This is on a HD6870 with vx2268 120hz screen and a secondary 60hz screen. Tried with both secondary screen disabled and with both on.