Building for webGl give me error

Hello, i downloaded the unity 5 for testing webgl, i just create a cube with a plane and build for webgl, it takes a lot of time and at the end unity shows error at the console, check screen shot. I know this version is still under development, i just report for future fix.

C:\Program Files\Unity 5.0.0b9\Editor\Data\PlaybackEngines\webglsupport/BuildTools\il2cpp/il2cpp.exe --copy-level=None --enable-stacktrace “J:\Informatica V\unity\testunity5\New Unity Project\Temp\StagingArea\Data\Managed\UnityEngine.UI.dll” “J:\Informatica V\unity\testunity5\New Unity Project\Temp\StagingArea\Data\il2cppOutput”
UnityEngine.Debug:Log(Object)
UnityEditorInternal.Runner:RunManagedProgram(String, String, String) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:52)
UnityEditorInternal.IL2CPPBuilder:ConvertPlayerDlltoCpp(ICollection1, String, String) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:383) UnityEditorInternal.IL2CPPBuilder:Run() (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:264) UnityEditorInternal.IL2CPPUtils:RunIl2Cpp(String, IIl2CppPlatformProvider, Action1, RuntimeClassRegistry) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:204)
UnityEditor.HostView:OnGUI()


Hello rollrodrig,

could you please file a bug report from the Editor with the projects attached, so we can give it a look and fix the issue?

Thanks,
Gabriele