The problem is created by OpenATV having changed the list requirements.
The channel name now has to be appended to the service string:
Code
OLD:
#SERVICE 1:0:1:6359:6632:3256:1010101:0:0:0:http%3a//URLxxx/130803
#DESCRIPTION TF1 HEVC
NEW:
#SERVICE 1:0:1:6359:6632:3256:1010101:0:0:0:http%3a//URLxxx/130803:TF1 HEVC
#DESCRIPTION TF1 HEVC
Only the OATV guys know why they change something that has worked for a long time and that many other developers rely on.
On the other hand, it shouldn't be a big deal to comply with the above.
EDIT: OATV seems to have fixed it with the latest update.