I've got a Terratec TV400 and i want to use ChrisTv, but it wont work

When i try to Autoscan for channels, an errormessage shows with the following:
Access violation at adress 653854BB in module Kstvtune.ax Read of adress 00000000
I have the following Specs.
Windows XP SP1 with ALL updates.(Before update of SP1 it didn't work)
Directx 9.0a(Have tried with 8.1 and 9.0b but didn't solve the problem)
Have uninstalled all Video Codec packs
Disabled antivirusprogram.
Shutdown all programs and processes that wasn't necessary in XP.
Have tried to install different WDM drivers for other Phillips SAA71XX based TV-cards, but still get the error message.
Has tried to install different versions of ChrisTv but STILL won't work.
I've tried to set the channels up manually but it won't change channel, when i try.
I tried searching for people with the same problem, and it seams that people with the Medion TV-CARD have the same problem.
the ONLY thing i "got" working is, when i open Chris TV it shows the last channel i've have been tuned into, and i have no problems hearing the sound, but no matter what it refuses to Autoscan or manually setup channels and switch bewteen them.
My Questions is:
Have do i solve this problem?
What is the problem caused by?
Microsoft have made a Update for the Directx 9.1b about the NTSC/PAL problem, but i can't install the update cause my XP is in danish and the update is in English:-(
Somebody please help me

/Morten