Internal Compile Error after adding any script

When i add any typr of script there are apear Internal Compile Error. On log: - Finished compile Library/ScriptAssemblies/Assembly-UnityScript-firstpass.dll Error: Analytics Event: 5(Compiler*Unknown*Internal compiler error. See the console log for more information. output was:)(1): skipped because it was sent more than once in 0.10 seconds Internal compiler error. See the console log for more information. output was:

(Filename: Line: 0)

OS: Windows 7

I tried to create a new project, but result was same. please help.