Nav mesh generating impossible?

I’ve been trying to render a huge map’s navmesh a few times now but at 32% I always get the same error message.

I wonder what is causing this and how this could be resolved.

I’m not sure if this would work, but have you tried generating the nav mesh on the client and then moving the .nav file to the server files?

As I said, it’s a huge map and sadly doing it in SP crashes me even faster than using a server.

If nav_generate don’t work your going to have manully edit the nav mesh https://www.youtube.com/watch?v=5mirSXi5W04 and should help you out https://developer.valvesoftware.com/wiki/Navigation_Meshes

Also http://steamcommunity.com/sharedfiles/filedetails/?id=527885257

Totally agreed, these are good ways to do it but I’m really aiming for automatically doing it. I have considered doing it manually as a pure last resort. Thank your for the suggestions anyway.