Hi all, Engineers who are familiar with HyperLynx please help solve stackup problem in HyperLynx. I'm getting stackup problems message when trying to simulate a one single net in my PCB. My PCB board has 2 physically layer only. But when trying to simulate a got warning message "The stackup has error". And when I opened stackup to edit there is a another message there. Nothing to do. No signal found for analyze". Before I had not such kind problem. Can anyone tell what does this means and how to solve it? Thanks. Mik. ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List forum is accessible at: http://tech.groups.yahoo.com/group/si-list List archives are viewable at: //www.freelists.org/archives/si-list Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu