Tvheadend

Hi,

(I hope this is the right forum section)

I am running HTS Tvheadend 3.5.126~g8c5f9af on a QNAP NAS
(qpkg from http://forum.qnap.com/viewtopic.php?f=276&t=52511&sid=55082b1264c449328d7b31f0977d69ad).

I am using a SkyTV Ultimate S/S2 (III) DVB-S stick from Suntek.
Driver: http://forum.qnap.com/viewtopic.php?f=276&t=57049

Now everything works fine, but the HD Channels:
I can find all muxes from my satellite, and when scanning them, all Services are identified (including HD Channels).
However when I map the Channels (automatically) the HD Channels are skipped because "no output" (according to log).
When I map an HD channel manually, it gets added to the channel list, but when I try to start it, the log says:

Jul 24 21:05:51.911 HTTP: 192.168.178.23: using ticket 9B0B07C89572E28C77B2A28CFE8027D0A434D122 for /stream/channelid/4
Jul 24 21:05:51.911 Service: Subscription "HTTP": Skipping "Sundtek DVB-S/S2 (III)/ASTRA 1: 11,836,500 kHz Horizontal (Default (Port 0, Universal LNB))/WDR HD" -- not enabled
Jul 24 21:05:51.911 subscription: No transponder available for subscription "HTTP" to channel "WDR HD" 
Jul 24 21:05:51.911 webui: Couldn't start streaming /stream/channelid/4?ticket=9B0B07C89572E28C77B2A28CFE8027D0A434D122, No service enabled
Jul 24 21:05:51.911 subscription: "HTTP" unsubscribing from "WDR HD" 

I would be grateful for any kind of help

[EDIT] Small correction: some few HD Channels are actually automatically mapped and work, but not nearly all that should work (tested with proprietary sat receiver).