Always require at least one character definition.

stepmania/src/GameState.cpp

@@ -190,6 +190,9 @@ void GameState::ReloadCharacters()
 		else
 			delete pChar;
 	}
+	
+	if( !m_pCharacters.size() )
+		RageException::Throw( "Couldn't find any character definitions" );
 }
 
 const float GameState::MUSIC_SECONDS_INVALID = -5000.0f;
@@ -311,13 +314,6 @@ bool GameState::IsPlayable( const ModeChoice& mc )
 			return false;
 	}
 
-	if( mc.pm == PLAY_MODE_RAVE || mc.pm == PLAY_MODE_BATTLE )
-	{
-		// Can't play Rave without characters for attack definitions.
-		if( m_pCharacters.empty() )
-			return false;
-	}
-
 	/* Don't set a PlayMode that's incompatible with our current Style (if any),
 	 * and vice versa. */
 	const PlayMode &rPlayMode = mc.pm != PLAY_MODE_INVALID? mc.pm:m_PlayMode;