pci-GPIB WIN2K CRASH

[SON 684]

My computer crashed as I executed the VB6 code for second time. I even use Ibonl(n,0) command in my code. Can anyone tell me what is "n" stand for? Is it an instrument's address? Where should I use Ibonl(n,0)?My system has PCI-GPIB and Win2K.

[pavanb]

That param is the Board or device descriptor. If a device or an interface is taken offline, the board or device descriptor (ud) is no longer valid. You must execute an ibdev or ibfind to access the board or device again.

Is there an error message associated with the crash? Also this discussion sounds similar to "VB6, W2K, always crashes 2nd time run in VB design mode" http://exchange.ni.com/servlet/ProcessRequest?RHIVEID=101&RNAME=ViewQuestion&HOID=506500000008000000EF150000&ECategory=Instrument+Connectivity.GPIB