This save was created in case you don't want to waste time on unstable additional missions like Fireman, Pizza Delivery or Medic.
Initially, I tried to fix the ambulance.c file, but I couldn't figure out how to remove the ped that spawns near the lighthouse underground from level 6-9, as a result of which he dies and the mission immediately fails due to such an unpleasant bug. I was lucky to complete this faulty mission and decided to save.
Details about the savegame:
Vigilante tasks are working, but difficult.
Taxi driver missions are not touched.
Packages and unique jumps are not touched.
Story missions are not started.
Installation: Move the SGTA401 file to the path Documents\Rockstar Games\GTA VC\savegames