can't find USB device New Focus 8742

[blakelock666]

hi all, 

i've searched to forum and was not able to find the info i need.
i've built a vi to control a new focus 8742 picomotor.  it works well.  then i installed labview on a different computer, copied the vi over to the new system, which throws the error "no devices found during discovery".  why can't it find this USB device?  Also, the new focus stand alone app works just fine (finds device and runs it) so i know the drivers are somewhere accessible on the pc.

old system is win7, new system is win10, both running Labview 2014
vi attached

[rolfk]

It seems to use a .Net driver, whose VIs you did not include. Most likely there is a disconnect between the .Net assembly used in those VIs and the actual USB port. Not knowing anything about the VIs calling this .Net assembly, nor the .Net assembly either, and also never having used this hardware at all, this is about as much as I can say.

Are you sure that .Net assembly is actually compatible with Windows 10? Or the Windows .Net framework installed on your Windows 10 system? That the New Focus app seems to work is unfortunately no indication. It may use a different driver than the .Net assembly that your VIs try to use.