General Error message in Content Manager

[jasonASC___]

Hello, my name is Jason. I recently wanted to start Assetto Corsa with mods when this error messages came up.

AC\caravatar.cpp (1309): CarAvatar::initPhysics
AC\caravatar.cpp (896): CarAvatar::CarAvatar
AC\sim.cpp (1446): Sim::addCar
AC\racemanager.cpp (462): RaceManager::initOffline
AC\racemanager.cpp (174): RaceManager::loadSessions
AC\sim.cpp (320): Sim::Sim
AC\splashscreen.cpp (319): SplashScreen:ostRender
AC\game.cpp (181): Spiel::onIdle
AC\game.cpp (210): Spiel::run
AC\acs.cpp (477): wWinMain
f:\dd\vctools\crt\crtw32\dllstuff\crtexe.c (618): __tmainCRTStartup
00007FFCD1007034 (KERNEL32): (Dateiname nicht verfügbar): BaseThreadInitThunk
00007FFCD1542651 (ntdll): (Dateiname nicht verfügbar): RtlUserThreadStart


After c.a 4 hours of slogging and reinstalling everything again it still didn't help. I urgently need an explanation or help. With kind regards, Jason