Tvheadend

Hi,

I try to connect to tvh using different clients.

But except admin user from VLC nothing works.
What are the requirements for streaming from tvh?
access permissions? URIs?

Versions:
xbmc 13.2
HTS Tvheadend 3.4~wheezy
xbmc tvheadend htsp client 1.9.27
tvhguide

This is xbmc, alternating between the messages "access denied" and "connection lost":

...
15:28:06 NAS tvheadend[2688]: htsp: Got connection from 192.168.178.20
15:28:06 NAS tvheadend[2688]: htsp: 192.168.178.20: Welcomed client software: XBMC Media Center (HTSPv8)
15:28:06 NAS tvheadend[2688]: htsp: 192.168.178.20 [ XBMC Media Center ]: Identified as user stream
15:28:06 NAS tvheadend[2688]: htsp: 192.168.178.20 [ stream | XBMC Media Center ]: Disconnected
15:28:11 NAS tvheadend[2688]: htsp: Got connection from 192.168.178.20
15:28:11 NAS tvheadend[2688]: htsp: 192.168.178.20: Welcomed client software: XBMC Media Center (HTSPv8)
15:28:11 NAS tvheadend[2688]: htsp: 192.168.178.20 [ XBMC Media Center ]: Identified as user stream
15:28:11 NAS tvheadend[2688]: htsp: 192.168.178.20 [ stream | XBMC Media Center ]: Disconnected
...

Trying VLC or VLC plugin from browser shows the following.
And VLC keeps asking for login and pw.

15:35:12 NAS tvheadend[2688]: htsp: 127.0.0.1: Disconnected
15:35:14 NAS tvheadend[2688]: HTTP: 192.168.178.20: /stream/channelid//1 -- 401
15:35:18 NAS tvheadend[2688]: HTTP: 192.168.178.20: /stream/channelid//1 -- 401
15:35:20 NAS tvheadend[2688]: HTTP: 192.168.178.20: /stream/channelid//1 -- 401
15:35:45 NAS tvheadend[2688]: HTTP: 192.168.178.20: /stream/channelid//1 -- 401
15:35:49 NAS tvheadend[2688]: HTTP: 192.168.178.20: /stream/channelid//1 -- 401
15:35:50 NAS tvheadend[2688]: HTTP: 192.168.178.20: /stream/channelid//1 -- 401
15:36:00 NAS tvheadend[2688]: htsp: Got connection from 192.168.178.20
15:36:00 NAS tvheadend[2688]: htsp: 192.168.178.20: Disconnected
15:36:00 NAS tvheadend[2688]: htsp: Got connection from 192.168.178.20
15:36:00 NAS tvheadend[2688]: htsp: 192.168.178.20: Disconnected
15:36:00 NAS tvheadend[2688]: htsp: Got connection from 192.168.178.20
15:36:00 NAS tvheadend[2688]: htsp: 192.168.178.20: Disconnected
15:36:57 NAS tvheadend[2688]: HTTP: 192.168.178.20: /stream/channelid/52 -- 401
15:36:57 NAS tvheadend[2688]: HTTP: 192.168.178.20: /stream/channelid/52 -- 401
15:37:12 NAS tvheadend[2688]: htsp: Got connection from 127.0.0.1
15:37:12 NAS tvheadend[2688]: htsp: 127.0.0.1: Disconnected

Using VLC with admin user works, but neither with android app or xbmc.
This might be because my admin pw is 20 chars generated (if not c&p it's hard not to mistype)

16:24:57 NAS tvheadend[2688]: HTTP: 192.168.178.20: /stream/channelid/1 -- 401
16:25:08 NAS tvheadend[2688]: subscription: "HTTP" subscribing on "Arte", weight: 100, adapter: "Technisat SkyStar USB HD (DVB-S/S2)", network: "ASTRA 1", mux: "ASTRA 1: 10,743,750 kHz Horizontal (No satconf)", provider: "ARD", service: "arte", quality: 100
16:25:25 NAS tvheadend[2688]: htsp: Got connection from 127.0.0.1
16:25:25 NAS tvheadend[2688]: htsp: 127.0.0.1: Disconnected
16:25:28 NAS tvheadend[2688]: mkv: Live stream: Write failed -- Connection reset by peer
16:25:28 NAS tvheadend[2688]: webui: Stop streaming /stream/channelid/1, muxer reported errors
16:25:28 NAS tvheadend[2688]: subscription: "HTTP" unsubscribing from "Arte" 
16:25:48 NAS tvheadend[2688]: HTTP: 192.168.178.20: /stream/channelid/1 -- 401
16:25:51 NAS tvheadend[2688]: HTTP: 192.168.178.20: /stream/channelid/1 -- 401
16:25:56 NAS tvheadend[2688]: subscription: "HTTP" subscribing on "Arte", weight: 100, adapter: "Technisat SkyStar USB HD (DVB-S/S2)", network: "ASTRA 1", mux: "ASTRA 1: 10,743,750 kHz Horizontal (No satconf)", provider: "ARD", service: "arte", quality: 100
16:26:08 NAS tvheadend[2688]: htsp: 192.168.178.26 [ stream | org.tvheadend.tvhguide ]: Disconnected
16:26:09 NAS tvheadend[2688]: htsp: Got connection from 192.168.178.26
16:26:09 NAS tvheadend[2688]: htsp: 192.168.178.26: Identified as user stream
16:26:09 NAS tvheadend[2688]: htsp: 192.168.178.26 [ stream ]: Welcomed client software: org.tvheadend.tvhguide (HTSPv8)
16:26:33 NAS tvheadend[2688]: mkv: Live stream: Write failed -- Broken pipe
16:26:33 NAS tvheadend[2688]: webui: Stop streaming /stream/channelid/1, muxer reported errors
16:26:33 NAS tvheadend[2688]: subscription: "HTTP" unsubscribing from "Arte" 
16:27:27 NAS tvheadend[2688]: htsp: Got connection from 127.0.0.1
16:27:27 NAS tvheadend[2688]: htsp: 127.0.0.1: Disconnected
16:27:49 NAS tvheadend[2688]: htsp: 192.168.178.26 [ stream | org.tvheadend.tvhguide ]: Disconnected
16:27:49 NAS tvheadend[2688]: htsp: Got connection from 192.168.178.26
16:27:49 NAS tvheadend[2688]: htsp: 192.168.178.26: Identified as user admin
16:27:49 NAS tvheadend[2688]: htsp: 192.168.178.26 [ admin ]: Welcomed client software: org.tvheadend.tvhguide (HTSPv8)

I ran out of ideas...

thanks for any help.

Jan