SmootStreaming +FLASH OSMF, but first transition video&audio stops!

Hi guys,

I'm trying to implement a player based on OSMF with Smoot Streaming, using MSAdaptiveStreamingPlugin 1.03 v.

If I use this framework with MS library to load a manifest for on-demand streaming, all seems to be ok, but if I use same for live streaming manifest, at first transition at first GET Fragment, player becomes black and mute.

My streaming video provider is Akamay. Is there something other to set on my videoElement, or to load plugin?

Thanks