sorry for hijacking this thread …
one more problem:
/usr/bin/php5 /data/app/www/piwik/console core:archive --url=http://www.plweb.at/piwik/
INFO [2016-12-31 12:53:41] ---------------------------
INFO [2016-12-31 12:53:41] INIT
INFO [2016-12-31 12:53:41] Running Piwik 3.0.0 as Super User
INFO [2016-12-31 12:53:41] ---------------------------
INFO [2016-12-31 12:53:41] NOTES
INFO [2016-12-31 12:53:41] - Reports for today will be processed at most every 3600 seconds. You can change this value in Piwik UI > Settings > General Settings.
INFO [2016-12-31 12:53:41] - Reports for the current week/month/year will be refreshed at most every 3600 seconds.
INFO [2016-12-31 12:53:41] - Archiving was last executed without error 15 hours 47 min ago
INFO [2016-12-31 12:53:41] - Will process 41 other websites because the last time they were archived was on a different day (in the website's timezone) , IDs: 2, 3, 4, 5, 7, 8, 9, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45
INFO [2016-12-31 12:53:44] Will ignore websites and help finish a previous started queue instead. IDs: 9, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45
INFO [2016-12-31 12:53:44] ---------------------------
INFO [2016-12-31 12:53:44] START
INFO [2016-12-31 12:53:44] Starting Piwik reports archiving...
INFO [2016-12-31 12:53:45] Day has finished for website id 9 since last run
INFO [2016-12-31 12:53:45] Will pre-process for website id = 9, period = day, date = last52
INFO [2016-12-31 12:53:45] - pre-processing all visits
ERROR [2016-12-31 12:53:49] Got invalid response from API request: ?module=API&method=API.get&idSite=9&period=day&date=last52&format=php&trigger=archivephp. Response was 'a:2:{s:6:"result";s:5:"error";s:7:"message";s:187:"Entry "Piwik\Auth" cannot be resolved: the class is not instantiable Full definition: Object ( class = #NOT INSTANTIABLE# Piwik\Auth scope = singleton lazy = false )";}'
ERROR [2016-12-31 12:53:49] Empty or invalid response '' for website id 9, Time elapsed: 3.756s, skipping
INFO [2016-12-31 12:53:51] Day has finished for website id 11 since last run
INFO [2016-12-31 12:53:51] Will pre-process for website id = 11, period = day, date = last52