Multisim and Ultiboard

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Differential pairs auto-routing can not work

Hi, everyone
I meet a problem while I using the functioin of routing differential pairs...
I follow the steps of the following two websites, but it seems doesn't work.
http://digital.ni.com/public.nsf/allkb/345BA8287A75214886257A1000586918
http://forums.ni.com/t5/Circuit-Design-Suite-Multisim/how-can-i-select-the-length-of-a-trace-in-Ulti...

I use this function to route FPGA differential pair, but it only complete one, another can't be auto-routed.
Ultiboard does not indicate any error message, it only indicates this.

擷取.PNG

Please do me a favor, thanks

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 Hello,

 

What's your Ultiboard version? We'll need to see your file for further troubleshooting. If you cannot attach it here please create a Service Request at ni.com/support and include your Ultiboard file and version info.

 

Regards,

Fernando D.
National Instruments

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