I was unable to build beta4 from the SVN sources.
Wifidog will not build, because it is looking for a source version that does not exist. I had the same problem in beta2, but assumed it was so obvious it would be fixed.
I disabled Wifidog from the .config and Nightwing built OK.
I tried to file a bug in Trac but was unsuccessful. I entered detailed information about the failure there, but cannot find it now. However, just starting fresh from an SVN download should make the problem obvious.
From the ticket that you created (
http://trac2.assembla.com/nightwing/ticket/5):
"Server certificate verification failed: issuer is not trusted (
https://dev.wifidog.org)"
Looks like you didn't accepted their certificate permanently.
-Bill Moffitt
Saludos, Julio