I'm not sure why this ClearSubscribers was here; it's causing

metrics to not be loaded after a resolution change, because
the reload is optimized out by SwitchThemeAndLanguage.
(We may have loaded ThemeMetrics on demand in the
past.)

The reload needs to always happen, even though the theme
hasn't changed, since the theme load is affected by the
resolution; eg. upvalues in Lua scripts may have been
computed based on SCREEN_WIDTH.

stepmania/src/GameLoop.h

@@ -7,7 +7,7 @@ namespace GameLoop
 {
 	void RunGameLoop();
 	void SetUpdateRate( float fUpdateRate );
-	void ChangeTheme( const RString &sNewTheme, const RString &sNewScreen );
+	void ChangeTheme( const RString &sNewTheme, const RString &sNewScreen, bool bForced = false );
 	void StartConcurrentRendering();
 	void FinishConcurrentRendering();
 };