diff -r ad855c779bf3 PC/launcher.c
--- a/PC/launcher.c	Thu Dec 03 17:32:05 2015 -0800
+++ b/PC/launcher.c	Fri Dec 04 09:20:34 2015 -0600
@@ -98,7 +98,7 @@
     MessageBox(NULL, message, TEXT("Python Launcher is sorry to say ..."),
                MB_OK);
 #endif
-    ExitProcess(rc);
+    exit(rc);
 }
 
 /*
@@ -652,7 +652,7 @@
     if (!ok)
         error(RC_CREATE_PROCESS, L"Failed to get exit code of process");
     debug(L"child process exit code: %d\n", rc);
-    ExitProcess(rc);
+    exit(rc);
 }
 
 static void
@@ -1354,6 +1354,7 @@
     wchar_t * av[2];
 #endif
 
+    setvbuf(stderr, (char *)NULL, _IONBF, 0);
     wp = get_env(L"PYLAUNCH_DEBUG");
     if ((wp != NULL) && (*wp != L'\0'))
         log_fp = stderr;