right, lets give this one more try.
the reason your seeing that error is probably because your OS thinks its now got the device installed and is trying to start the app and failing.
what we need from you is:
what entry is now in your device manager.
it will be in 'sound,video and game controllers' as per my #18.
what files are on your USB DVB-T cd , to make that easyer for you, do this:
go here and grab and install
http://www.freecommander.com/index_en.htm
start FC up and point it to the cd drive letter.
highlight it, then goto the 'folder' option at the top and
select 'make folder list' the option will default to c:\FileList.txt
in the other window click c: and find the c:\FileList.txt double click it and that file will load into notepad, select all that text and copy it and past it into your next post here so we can see
what files you might use to get this thing working.
at some point you are going to delete the device in the device manager BUT NOT UNTIL we know what it is (so tell us, as iv already said)or risk killing/removing the wrong thing so at your own risk as usual.
if the c:\FileList.txt is very long then you might need to refine
the file but usually a normal cd contents are limited so shouldnt be a problem.
you might as well put that ppcompat.txt here too, frominside FC click c:
again 'file' click search and put that ppcompat.txt into the box, when found double click that and again it will load into a notepad, as above copy/past.