由于众所周知的原因（今天中午美人蛇更新导致老存档种族加载不出来）
开了个新档，原来开档时也会跳红字，但这次log关不上了，跳了900多条……
System.InvalidCastException: Specified cast is not valid.
at MusicManager.MusicManager.get_AudioSource () [0x00000] in <af137df273044108b01410069578df42>:0
at MusicManager.MusicManager.get_CurrentSong () [0x00000] in <af137df273044108b01410069578df42>:0
at MusicManager.GameComp_MusicManager.GameComponentOnGUI () [0x00023] in <af137df273044108b01410069578df42>:0
at Verse.GameComponentUtility.GameComponentOnGUI () [0x00017] in <7927e938de4c4089b4add4215e58d5b1>:0
Verse.Log:Error(String, Boolean)
Verse.GameComponentUtility:GameComponentOnGUI()
Verse.UIRoot:Verse.UIRoot.UIRootOnGUI_Patch3(UIRoot)
Verse.UIRoot_Entry:UIRootOnGUI()
Verse.Root:Verse.Root.OnGUI_Patch1(Root)
这是说MusicManager的UI有问题还是找不到音源了