Update gameplay feedback and repair portable VR launchers

RUN-VR.cmd

@@ -2,10 +2,11 @@
 setlocal
 cd /d "%~dp0"
 if not exist ".venv\Scripts\python.exe" (
-    echo Run SETUP.cmd and complete docs\INSTALLATION.md first.
+    echo This checkout is not configured. Run SETUP.cmd and complete docs\INSTALLATION.md first.
+    call tools\show_launcher_error.cmd
     exit /b 1
 )
-".venv\Scripts\python.exe" tools\setup_environment.py --check
-if errorlevel 1 exit /b 1
-".venv\Scripts\python.exe" tools\launch.py
-exit /b
+".venv\Scripts\python.exe" -u tools\launch.py %*
+set "FTLVR_EXIT=%errorlevel%"
+if not "%FTLVR_EXIT%"=="0" call tools\show_launcher_error.cmd
+exit /b %FTLVR_EXIT%