[TomTom]

aiscript "MAPTYPE" is for RTCW.
"For the map type variable it can either be a 1 if your map is a dual objective map, a 0 if it's a regular objective map, or a 2 for a checkpoint map"
TTBOMK Checkpoint maps are like domination play. Your team must takeover a number of flags to win. (ET does have a few such maps but typically these maps also have other objectives e.g normandy breakout ET is a dual objective combined with checkpoints.).
Objective maps are self explanitory, dual versions being those where both sides have objectives so it is not strictly one side defending.

If it says it can't find a path that suggests fritzbot is not finding the .nav. Verify (1) /sv_pure is 0, (2) .nav file exists and is correctly named and placed in the correct path.

(To confuse matters in ET some Splash Damage docs refer to Radar as dual objective since there are 2 radar parts to steal. Now I am confused)