upgraded from windows NT to XP and am getting the error

[Kate 70]

"I am using a LabVIEW VI to run two Opteon digital cameras. Originally, they were run off a Windows NT machine, however it ran out of hard drive space and we had to upgrade to a Windows XP machine. I installed all the new drivers from Opteon, however when I run the VI on the new system it does not load the image viewer or scroll bars and I recieve the error "could not load control". The control for the view screen is "MVCamView" and the control for the scrollbars is "MSForms.IScrollbar". The drivers sent to me by Opteon work fine, as the free program that Opteon sent has no problems."

[Jeremy_L]

Hi Kate,

I believe those controls are referring to ActiveX Controls that are not registered on this new system. I would check to see if Opteon's installation automatically registers the MVCamView control. As for MSForms.IScrollbar, it is part of Visual Basic for Applications and should be installed with most Microsoft development or Office applications. I would check to see if either of these is the case. To check if they are registered and/or available, open a blank VI in LabVIEW, put down an automation refnum on the front panel, right click on the front panel, Select ActiveX Class, and Browse for the controls. If they show up, then you should be able to access them in your other application. If they don't appear, then it may not be registered.

Jeremy L.

National Instruments