I'm using the MS-Studio 6 ActiveX-controls together with Visual Studio .Net 2002 on a Windows 2000 machine with NI-DAQ 7.01. My configuration is setup for buffered event counting using a 6533 and a 6602 PCI-card. When the 6602-card is running into the error -10920, I'll have to reboot the system. Resetting the 6602-Device by using CWDAQTools.ResetDevice or CTR.Reset doesn't work.