CoD won't fully start up

[AnarchyZG]

I enabled the logging feature (turn off the Steam Cloud and enable log in conf.ini). An unhandled exception is shown in the logfile, unfortunatelly it does not help since it does not give a clue where the problem might be (code is obfuscated).

Main begin:
System.ArgumentOutOfRangeException: startIndex cannot be larger than length of string.
Parameter name: startIndex
at System.String.InternalSubStringWithChecks(Int32 startIndex, Int32 length, Boolean fAlwaysCopy)
at p5x2QOMqHgjhjSidhRa.Kd1Y1CMLC6FaI4t4roB.TsG6QNM0e5 PGQcF55j5.VEv157j24(String )
at p5x2QOMqHgjhjSidhRa.Kd1Y1CMLC6FaI4t4roB.TsG6QNM0e5 PGQcF55j5.JE0P0cBDD()
at lYr8vDW0WoayHXbhMI8.ingTorWgsvQJcaJ8jtL.QJp04utlD( )
at lYr8vDW0WoayHXbhMI8.ingTorWgsvQJcaJ8jtL.fpPJ6vs2S( Boolean )
at lYr8vDW0WoayHXbhMI8.ingTorWgsvQJcaJ8jtL.OoWrRI4i2( )
at WxbfMWMnOZRKUmSTbCM.oHlsKeM8qJEPeShxIFN.JqRxmYK1Fa LPTowlK6Rm()
at WxbfMWMnOZRKUmSTbCM.oHlsKeM8qJEPeShxIFN.qqxPtNrULr W()
at p5x2QOMqHgjhjSidhRa.Kd1Y1CMLC6FaI4t4roB.VG97GRKRyD Zaj6Zsi181(Object )
at p5x2QOMqHgjhjSidhRa.Kd1Y1CMLC6FaI4t4roB.BvX7tt2qo( Kd1Y1CMLC6FaI4t4roB , String[] , String , String )