Error launching Novice seriers 1 PLS HELP ME

[Fonra500]

I cant play history mode because of this error
AC\steaminterface.cpp (739): SteamInterface::update
AC\game.cpp (261): Game::update
AC\game.cpp (261): Game::update
AC\game.cpp (261): Game::update
AC\game.cpp (112): Game::onIdle
AC\game.cpp (210): Game::run
AC\acs.cpp (477): wWinMain
f:\dd\vctools\crt\crtw32\dllstuff\crtexe.c (618): __tmainCRTStartup
PLS help me.

 

[Please Stop This]

Whats "History mode" ?
Because of "SteamInterface" error i suggest a steam verification...
right click AC, properties:

Local files -> "check for errors" or similar (...auf Fehler überprüfen...)