1.1 --- a/GateKeeper.cpp	Sat Nov 12 21:44:02 2016 +0100
     1.2 +++ b/GateKeeper.cpp	Sat Nov 12 21:52:41 2016 +0100
     1.3 @@ -381,10 +381,15 @@
     1.4      {
     1.5  		{
     1.6  			HANDLE hSemaphore = CreateSemaphore(NULL, 0, 2, _T("PEPINSTALLERSEMAPHORE"));
     1.7 -			if (GetLastError() != ERROR_SUCCESS)
     1.8 +			DWORD le = GetLastError();
     1.9 +			if (hSemaphore) {
    1.10 +				CloseHandle(hSemaphore);
    1.11 +				if (le == ERROR_ALREADY_EXISTS)
    1.12 +					return;
    1.13 +			}
    1.14 +			else {
    1.15  				return;
    1.16 -			else if (hSemaphore)
    1.17 -				CloseHandle(hSemaphore);
    1.18 +			}
    1.19  		}
    1.20  
    1.21          BCRYPT_KEY_HANDLE dk = delivery_key();