Hi Martyn,
No other apps that talk to the Picoscope are open. I can start and stop the Picoscope software and it can open the scope. Of course it is not running when I try Labview.
I am using a file named ps3000.llb, modified on 5/22/2007, 283 KB.

Any other suggestions?
thanks,
Kent

I am having problems using Labview 10 with my Picoscope 3425. I downloaded and installed the Pico software and I can use the scope that way. But if I try and use Labview and the PS3000.llb I can't seem to make the ps3000 Open Unit.vi return anything but a zero (0). Any suggestions?
thanks,
Kent