Ok, heres the copy paste from the L4D cusom Campaigns forum which I'm pasting here because of extremely slow responses there (althogh I'm not sure here will be much better, no offense)
Here it comes, another thread by me having a problem! Anyway, so I told everyone (a whole whopping 1 person I think) about the problems with infected being able to find me and stuff, after no luck I looked in the advanced nav mapping areas of the tutorial. Based on information from there I believe to have found that the problem is based in the flow. I can see that by using z_flow_delta 2. Some of the yellow arrows do not connect to each other, which is what I believe is causing the problem. But I cannot figure out how to get the arrows to meet, any suggestions, I've tried deleting everything (nav file) and redoing it all, because I figured the problem may have arrisen if I modified something in the map in that area. But to no avail, I have also tried just deleting the problem causing ones and remaking them, this has not solved it. if someone could give me a possible solution that would be great!
