Cleanup RageException::Throw(). Do not use ssprintf() inside of Throw() and do not pass it bare error messages. Use RageException::Throw( "%s", sError.c_str() ); instead. Be consistent with quoting file names "%s" and theme metrics as "%s : %s". Try to make them complete English sentences when possible.

stepmania/src/ScreenOptionsManageCourses.cpp

@@ -195,7 +195,7 @@ void ScreenOptionsManageCourses::BeginScreen()
 	switch( EDIT_MODE.GetValue() )
 	{
 		default:
-			RageException::Throw( "ScreenOptionsManageCourses: Invalid edit mode:",
+			RageException::Throw( "ScreenOptionsManageCourses: Invalid edit mode: %s.",
 					      EditModeToString(EDIT_MODE.GetValue()).c_str() );
 		case EditMode_Practice:
 		case EditMode_Home: