This annoying message means Your waypoints for the map are broken - there is no connection from one node to another - bot can go to some node (waypoint) , but it cannot go anywhere else, because the outgoing connection is broken / missing.
To solve this there are 2 solution :
1. Find better pwf file (with waypoints) for Your map (and don't forget delete map_name.pvi and map_name.pxp files located in podbot\wptdefault - those for old map_name.pwf - this one with broken paths) - use for it
Waypointing forum - if there is no pwf You need - ask nicely for it - maybe someone will create it for You or just look into
filebase.
2. Fix the problem Your self - go to the Waypoint editor (works only on listenserver) by console command:
wpmenu
then try to find option "save" - if some path is broken - the editor will "teleport" You to the broken path to let You fix missing connection. More details about using wp editor You can find
here.
[EDIT]
Moved topic to where it belongs...
[/EDIT]