[Lunatixz]

Fixed this by creating Youtube tv-channel filled with trailers and made those smartplaylist channels to interleave it. Setup worked "right out of the box." Sweeeet!

Not sure I follow the problem? trailers for bct's are not working for some playlists?

can you give me playlist details? movie or episode?

Sorry, might be that I'm using wrong names for things. I try to clarify

I use XBMC to make a playlist from my library, like comedy channel and rule out all the animation genre.
Use the playlist in PTVL as a base of the channel. But PTVL didn't scheduled to play any trailers in between episodes at that channel altough I think I had enabled all the right settings. (even tried putting that Enable BTCs advanced rule to channel's settings). .m3u files didn't either have any trailer lines there, so it wasnt a PTVL-error not playing items on it's playlist.
But, at same time on autotuned channels; trailers were schedule between all the episodes just as I had selected from the settings.

But I worked around this problem by making a Youtube-channel playing nothing but trailers all the time and made channels that I wanted to interleave it.

Am I now making sense?

are you force channel resetting after adding a channel or changing BCT settings?

because bct's won't add to playlist until a new m3u is created. and new m3u's are either made if force channel reset, or if the channel grows old and PTVL needs to add new media.
I'll add code to help bct's get added without a reset.