The "No path found" message can occur because of things that seem harmless and don't affect the bots' normal navigation that badly, e.g. a point where a waypoint is on top of a crate and there's a connection down from the crate to the ground, but no jump connection up. Stuff like that, you know.
However, judging such stuff blindly is really like gazing into a crystal ball; in order to tell you anything even remotely helpful, I need to see those waypoints. The map is de_greatassault, ok. I guess I will have no trouble finding that map and downloading it. If I have the waypoints you made, it won't take me more than 20 minutes to track down any errors and 20-60 minutes more to make some suggestions on how to get rid of them.
