virtual bench "system error" Sequence contains no matching element

[vaguy]

We have a Virtual Bench that will not correctly connect. We get a pop up "System Error" and the text in the middle reads "Sequence Contains No matching element"

[JoeFriedchicken]

Can you share more information about your system?

• What firmware version does your VirtualBench have?
• Are you running the application from the drive on the device, or do you have it installed on your Windows PC, or are you using the iPad app?

[vaguy]

The Virtual Bench has the latest update (as of last week) of the firmware. We are running the application on the device.

[JoeFriedchicken]

Thanks 🙂

I have two requests -- please do them in this order.

1. Attach the application preferences file:
1. Open a file explorer
2. In the address bar, enter this path (copy/paste can help):
• XP: %USERPROFILE%\Local Settings\Application Data\National Instruments\NI-VirtualBench
• Vista, 7, 8: %USERPROFILE%\AppData\Local\National Instruments\NI-VirtualBench
3. Attach the file ni-virtualbench-preferences.vbconfig
2. Try switching to Demo Mode after you receive the error:
• How Can I Switch between the Hardware and Demo Modes of VirtualBench?
• http://digital.ni.com/public.nsf/allkb/89A7E8A6F39D4FAA86257D3A00791312
• If the application can use Demo Mode, please let me know.

[vaguy]

I can run in demo mode. Did you get the attachment? (via email)

[vaguy]

Also, would it be possible to just re-image the whole drive on the VB?

Regards

Harry

[JoeFriedchicken]

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vaguy wrote:

I can run in demo mode. Did you get the attachment? (via email)

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No. You can either attach it to your next post, or you can send a personal message. The file can help us understand what might have confused the application so we can improve its behavior.

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vaguy wrote:

Also, would it be possible to just re-image the whole drive on the VB?

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Yes. Use the reset button on the back. The application also uses information stored on the PC when it starts. If the problem is there, then resetting the device alone won't help.

NI VirtualBench Help :: Reset Button

http://zone.ni.com/reference/en-XX/help/371526A-01/vbhelp/wirelessbutton/

[vaguy]

We have had several VB's do this and resetting the bench takes care of it every time. The way we are using them in a large classroom, the B's will likely be connected to a different computer every day. Would that make a difference?

Thanks

Harry

[JoeFriedchicken]

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vaguy wrote:

We have had several VB's do this and resetting the bench takes care of it every time. The way we are using them in a large classroom, the B's will likely be connected to a different computer every day. Would that make a difference?

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I don't know 😕

If all devices and hosts are the same, swapping benches would not cause this error. It's possible that one of the VirtualBench devices isn't using the newest firmware, or one of the host PCs has an older application installed on disk. A mismatched app and device should not cause this, but if it does, I would like to see it fixed for everyone.

I would really appreciate it if you could send the .vbconfig file once you notice this error again -- analyzing it is the next step for understanding the defect.

[vaguy]

ok, I will watch for it.

Thanks