08:55:05: INFO - parsers Get page: http://www.arte.tv/guide/fr/plus7.json
08:55:05: INFO - parsers urllib2 error: HTTP Error 404: Not Found
08:55:05: INFO - parsers Read Error: HTTP Error 404: Not Found
08:55:08: WARNING - artePlus Parsing finished with message '['error', 'Stage 1',
Could it be a (temporary) problem froma Arte side ?
I think you must upgrade to the version 2.3.0
If this is not the problem, run Qarte into a terminal with the debugging option:
$ qarte -d
and paste here the result.