It seems that the number of bits the current format is using was being reported incorrectly and causing a problem. This has been fixed. We have tested using
Dim width, height
rr.GetCameraFormat width, height, fps, compression
WScript.Echo width & " x " & height & " at " & fps & "fps using "&compression&" compression"
saved as something.vbs and run from the command line. This caused RR to crash in previous versions but now appears to work as expected.
Please download the latest version for this fix.