Unity freezes on play, no error

Hi everyone,

my Editor freezes when i hit play.

Debug.Log() does not give any output.

Also I can not find any error in the debug file:

 LICENSE SYSTEM [2013515 10:54:32] No start/stop license dates set
 
 LICENSE SYSTEM [2013515 10:54:32] Next license update check is after 2013-05-16T05:15:48
 
 BatchMode: 0, IsHumanControllingUs: 1, StartBugReporterOnCrash: 1, shouldGiveDebuggerChanceToAttach: 0
 Initialize mono
 Mono path[0] = 'D:/Entwicklung/Unity/Data/Managed'
 Mono path[1] = 'D:/Entwicklung/Unity/Data/Mono/lib/mono/2.0'
 Mono path[2] = 'D:/Entwicklung/Unity/Data/UnityScript'
 Mono config path = 'D:/Entwicklung/Unity/Data/Mono/etc'
 Using monoOptions --debugger-agent=transport=dt_socket,embedding=1,defer=y
 IsTimeToCheckForNewEditor: Update time 1368610660 current 1368608072
 D:/Entwicklung/Projects/Versuch1
 Loading GUID <-> Path mappings ... 0.000687 seconds.
 Loading Asset Database ...  0.001360 seconds
 AssetDatabase consistency checks ...  0.021652 seconds
 Initialize engine version: 4.1.2f1 (911c7369eeac)
 Disabled multithreaded rendering due to old version of Windows.
 Changing input language can cause lockups with versions before Vista.
 Use -force-gfx-mt option on the command line to override.
 GfxDevice: creating device client; threaded=0
 Direct3D:
     Version:  Direct3D 9.0c [ati2dvag.dll 6.14.10.7279]
     Renderer: ATI Radeon HD 5700 Series
     Vendor:   ATI
     VRAM:     1024 MB (via registry)
     Caps:     Shader=30 DepthRT=1 NativeDepth=1 NativeShadow=1 DF16=1 DF24=1 INTZ=1 RAWZ=0 NULL=1 RESZ=1 SlowINTZ=1
 Registering custom dll's ... 0.000347 seconds.
 Begin MonoManager ReloadAssembly
 Platform assembly: D:\Entwicklung\Unity\Data\Managed\UnityEngine.dll (this message is harmless)
 Platform assembly: D:\Entwicklung\Unity\Data\Managed\UnityEditor.dll (this message is harmless)
 Non platform assembly: D:\Entwicklung\Projects\Versuch1\Library\ScriptAssemblies\Assembly-UnityScript.dll (this message is harmless)
 Loading D:\Entwicklung\Projects\Versuch1\Library\ScriptAssemblies\Assembly-UnityScript.dll into Unity Child Domain
 Platform assembly: D:\Entwicklung\Unity\Data\Managed\UnityEditor.Graphs.dll (this message is harmless)
 Loading D:\Entwicklung\Unity\Data\Managed\UnityEditor.Graphs.dll into Unity Child Domain
 Platform assembly: D:\Entwicklung\Unity\Data\Mono\lib\mono\2.0\I18N.dll (this message is harmless)
 Platform assembly: D:\Entwicklung\Unity\Data\Mono\lib\mono\2.0\I18N.West.dll (this message is harmless)
 Platform assembly: D:\Entwicklung\Unity\Data\Mono\lib\mono\2.0\System.Core.dll (this message is harmless)
 Platform assembly: D:\Entwicklung\Unity\Data\Mono\lib\mono\2.0\System.dll (this message is harmless)
 Platform assembly: D:\Entwicklung\Unity\Data\Managed\Mono.Cecil.dll (this message is harmless)
 Platform assembly: D:\Entwicklung\Unity\Data\Mono\lib\mono\2.0\System.Xml.dll (this message is harmless)
 Platform assembly: D:\Entwicklung\Unity\Data\Mono\lib\mono\2.0\UnityScript.dll (this message is harmless)
 Platform assembly: D:\Entwicklung\Unity\Data\Managed\ICSharpCode.NRefactory.dll (this message is harmless)
 Mono: successfully reloaded assembly
 - Completed reload, in  0.220 seconds
 System memory in use before: 2.7 MB.
 Unloading 24 Unused Serialized files (Serialized files now loaded: 0 / Dirty serialized files: 0)
 System memory in use after: 1.7 MB.
 
 Unloading 0 unused Assets to reduce memory usage. Loaded Objects now: 49.
 Total: 4.453769 ms (FindLiveObjects: 0.014618 ms CreateObjectMapping: 0.004883 ms MarkObjects: 0.301567 ms  DeleteObjects: 0.009365 ms)
 
 Validating Project structure ... 0.000333 seconds.
 Refresh, detecting if any assets need to be imported or removed ... 0.000676 seconds (Nothing changed)
 Platform assembly: D:\Entwicklung\Unity\Data\Mono\lib\mono\2.0\System.Xml.Linq.dll (this message is harmless)
 System memory in use before: 5.3 MB.
 Unloading 5 Unused Serialized files (Serialized files now loaded: 0 / Dirty serialized files: 0)
 System memory in use after: 3.2 MB.
 
 Unloading 0 unused Assets to reduce memory usage. Loaded Objects now: 341.
 Total: 12.132154 ms (FindLiveObjects: 0.053822 ms CreateObjectMapping: 0.023576 ms MarkObjects: 1.456360 ms  DeleteObjects: 0.024602 ms)
 
 <RI> Initializing input.
 
 <RI> Input initialized.
 
 

Does anyone know what is going on?

I hope i did not forget any information

-FRUGI