Tvheadend

Hello,

for some channels the EPG shows just an entry with 24 hours duration for the current and the next day.
Description of the entries is in spanish....

What could be the cause of this behaviour?

Normally the channels should get their EPG in first place from OTA, in second place I added an external xmltv-grabber.
But the entries of this grabber are fine, especially they don't contain descriptions in spanish :-)