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OrCAD Layout Problem: Online DRC error!!!

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leotim

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Hi all,
i have a problem routing an SMD part in layout plus 10.5.
When i turn online DRC off, and route the pad manualy, and then check DRC from Auto menu, there is no error marker.
But if i enable online DRC, if i try to edit those routed tracks, i see the error message:

"Connection is shorted. try "Allow DRC Error" to edit this track.

I checked my spacing rulls and it seems that all spacing rulls are satisfied.
Also, if i try to route an unrouted pin of that SMD part, i can not do that if OnlineDRC is on.
I seems that there is hidden rull that just Online DRC can understand it and this cause to i am not able to auto route the board.

Some one could help me?
Regards.
 

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