Zandronum

Jroc set up zanrunb13.pk3 with idl2013.wad (I changed from 2013l to see if it would work) on my VPS -94.102.147.2:10705 - (union servers, he shares it with me) but for some reason I cannot join the game, I get this error before anything -
That's after UDP initialized and demo is recorded. I've deleted and re-downloaded all files, I'm pretty sure I'm not loading any skins or other files. I can join this server: 75.180.19.183:10666 running: idl2013l.wad zanrunb12.pk3. So idk whats going on there because everyone else seems to be able to join the first one :/

EDIT:

Problem only occurs on b13.pk3 and I can connect if I manually connect in game.

This is a very persistent error and I have no idea the cause. While the majority can connect fine, I've counted 4 people so far who cannot and get this exact error. Furthermore, these same people are able to connect to the "ZanRun Test Server", which has exactly the same wads and more!

edit: scratch that, the Test Server had an older version of zanrun, it seems zanrunb13 is what is giving some (but not most) people this error: http://static.[bad site]/wads/zanrunb13.pk3

By the way, if the people load the wads manually and connect via the console, they can connect fine.

Issue resolved, some A_START and A_END labels were left in the sample mapwad as dusk found.