Error during downloading since 2 days

Hi,

since 2 days i get these error messages and don't know why?
( 1/152 ) TVDIGITAL.DE -- chan. (xmltv_id=13TH STREET) -- mode Incremental
[Error ] error downloading page: The method or operation is not implemented. (5sec)
[Error ] retry 1 of 4 times
[Error ] error downloading page: The method or operation is not implemented. (10sec)
[Error ] retry 2 of 4 times
[Error ] error downloading page: The method or operation is not implemented. (15sec)
[Error ] retry 3 of 4 times
[Error ] error downloading page: The method or operation is not implemented. (20sec)
[Error ] retry 4 of 4 times
[Error ] Unable to update channel 13TH STREET
[Critical] Generic syntax exception:
[Critical] message:
[Error ] no index page data received from 13TH STREET
[Error ] unable to update channel, try again later
[ Info ] Existing guide data restored!
[ Debug ]
[ Info ] ( 1/152 ) TVDIGITAL.DE -- chan. (xmltv_id=3plus) -- mode Incremental
[Error ] error downloading page: The method or operation is not implemented. (5sec)
[Error ] retry 1 of 4 times
[Error ] error downloading page: The method or operation is not implemented. (10sec)
[Error ] retry 2 of 4 times
[Error ] error downloading page: The method or operation is not implemented. (15sec)

During this - I can't download anything :-(
I don't modify anything because I was on a short trip.

Please be so kind and help me.

Thank you
Uwe