AxVLCPlugin2 problems

I have a program that put one or more AxVLCPlugin2 into a form and play videos using this code:

If Not vlc.IsDisposed Then
If vlc.playlist IsNot Nothing Then
If vlc.playlist.items.count > 0 AndAlso vlc.playlist.isPlaying Then
vlc.playlist.stop()
End If
vlc.playlist.items.clear()
End If
vlc.playlist.add(d.cUrlFinal)
vlc.playlist.playItem(0)                                            

Also I have a code for doing loop because the property autloop doesn't work:

If vlc.input.state = 6 Then
vlc.playlist.playItem(0)
End If

First, I want to know if the VLC team are going to fix Autoloop problems. Second, I've checked that sometimes the players are busy and when I use playlist.stop or playlist.playitem(0), it crash and I don't know why. Is there any property to check before use this features? I have forced with a semaphore for players can't do anything at same time. What could I do ? Is it a bug? Will you fix it? Thanks for all. Best regards.