Archive log error year fails (1 reply)

We're receiving these errors in the archive log even though archiving has run/complete.

"INFO CoreConsole[2014-07-07 23:25:43] [35b76] Done archiving!
INFO CoreConsole[2014-07-07 23:25:43] [35b76] ---------------------------
INFO CoreConsole[2014-07-07 23:25:43] [35b76] SUMMARY
INFO CoreConsole[2014-07-07 23:25:43] [35b76] Total visits for today across archived websites: 809
INFO CoreConsole[2014-07-07 23:25:43] [35b76] Archived today's reports for 17 websites
INFO CoreConsole[2014-07-07 23:25:43] [35b76] Archived week/month/year for 17 websites
INFO CoreConsole[2014-07-07 23:25:43] [35b76] Skipped 0 websites: no new visit since the last script execution
INFO CoreConsole[2014-07-07 23:25:43] [35b76] Skipped 0 websites day archiving: existing daily reports are less than 3600 seconds old
INFO CoreConsole[2014-07-07 23:25:43] [35b76] Skipped 0 websites week/month/year archiving: existing periods reports are less than 3600 seconds old
INFO CoreConsole[2014-07-07 23:25:43] [35b76] Total API requests: 68
INFO CoreConsole[2014-07-07 23:25:43] [35b76] done: 17/17 100%, 809 vtoday, 17 wtoday, 17 wperiods, 68 req, 52760351 ms, 1 errors.
INFO CoreConsole[2014-07-07 23:25:43] [35b76] Time elapsed: 52760.351s
INFO CoreConsole[2014-07-07 23:25:43] [35b76] ---------------------------
INFO CoreConsole[2014-07-07 23:25:43] [35b76] SCHEDULED TASKS
INFO CoreConsole[2014-07-07 23:25:43] [35b76] Starting Scheduled tasks...
ERROR CoreConsole[2014-07-07 23:34:11] [35b76] Got invalid response from API request: http://mysite/index.php?module=API&method=CoreAdminHome.runScheduledTasks&format=csv&co$

INFO CoreConsole[2014-07-07 23:34:11] [35b76] done
INFO CoreConsole[2014-07-07 23:34:11] [35b76] ---------------------------
INFO CoreConsole[2014-07-07 23:34:11] [35b76] ---------------------------
INFO CoreConsole[2014-07-07 23:34:11] [35b76] SUMMARY OF ERRORS
INFO CoreConsole[2014-07-07 23:34:11] [35b76] Error: Got invalid response from API request: http://mysite/index.php?module=API&method=API.get&idSite=1&period=year&date=last7$
INFO CoreConsole[2014-07-07 23:34:11] [35b76] Error: Got invalid response from API request: http://mysite/index.php?module=API&method=CoreAdminHome.runScheduledTasks&format=$
ERROR CoreConsole[2014-07-07 23:34:11] [35b76] 2 total errors during this script execution, please investigate and try and fix these errors."

As you can see the core:archive is taking all day to run once! The longest time seems to be taken by our most visited site 'siteid1' - the 'month' takes really long & 'year' takes forever to complete with an error saying '0' visits which is not possible.

"INFO CoreConsole[2014-07-07 08:46:23] [35b76] Starting Piwik reports archiving...
INFO CoreConsole[2014-07-07 08:46:55] [35b76] Archived website id = 1, period = day, 1069 visits in last last4 days, 170 visits today, Time elapsed: 31.952s
INFO CoreConsole[2014-07-07 09:03:48] [35b76] Archived website id = 1, period = week, 23234 visits in last last8 weeks, 175 visits this week, Time elapsed: 1013.015s
INFO CoreConsole[2014-07-07 11:16:44] [35b76] Archived website id = 1, period = month, 114920 visits in last last8 months, 2478 visits this month, Time elapsed: 7976.503s
ERROR CoreConsole[2014-07-07 16:06:47] [35b76] Got invalid response from API request: http:/mysite/index.php?module=API&method=API.get&idSite=1&period=year&date=last7&forma$
INFO CoreConsole[2014-07-07 16:06:47] [35b76] Archived website id = 1, period = year, 0 visits in last last7 years, 0 visits this year, Time elapsed: 17402.930s
INFO CoreConsole[2014-07-07 16:06:47] [35b76] Archived website id = 1, 4 API requests, Time elapsed: 26424.402s [1/17 done]"

If I try to run a 'year' report from the UI (http://mysite/index.php?module=CoreHome&action=index&idSite=1&period=range&date=2013-07-01,2014-06-30#/module=Dashboard&action=embeddedIndex&idSite=1&period=range&date=2013-07-01,2014-06-30&idDashboard=1) it hangs/continues running for ages - it hasn't given an error as yet, just shows as 'loading' widgets.

we are running version 2.4.0, we have cleared out log files older than 180 days old.

Thanks
Lynn