I have upgrade Piwik to Git master, but then reverted to the 1.12 tag.
I am getting the following error when trying to view the charts of a year.
URL: index.php?module=MultiSites&action=index&idSite=1&period=year&date=2013-09-13
Recoverable Error: Argument 1 passed to Piwik_DataTable::addRow() must be an instance of Piwik_DataTable_Row, instance of __PHP_Incomplete_Class given, called in /var/piwik.git/core/DataTable.php on line 1085 and defined in /var/piwik.git/core/DataTable.php on line 575
Backtrace →
#0 Piwik_ErrorHandler(…) called at [/var/piwik.git/core/DataTable.php:575]
#1 Piwik_DataTable->addRow(…) called at [/var/piwik.git/core/DataTable.php:1085]
#2 Piwik_DataTable->addRowsFromArray(…) called at [/var/piwik.git/core/DataTable.php:1054]
#3 Piwik_DataTable->addRowsFromSerializedArray(…) called at [/var/piwik.git/core/Archive/Single.php:504]
#4 Piwik_Archive_Single->getDataTable(…) called at [/var/piwik.git/core/Archive/Single.php:348]
#5 Piwik_Archive_Single->loadSubDataTables(…) called at [/var/piwik.git/core/ArchiveProcessing/Period.php:211]
#6 Piwik_ArchiveProcessing_Period->getRecordDataTableSum(…) called at [/var/piwik.git/core/ArchiveProcessing/Period.php:176]
#7 Piwik_ArchiveProcessing_Period->archiveDataTable(…) called at [/var/piwik.git/plugins/Actions/Archiving.php:70]
#8 Piwik_Actions_Archiving->archivePeriod(…) called at [/var/piwik.git/plugins/Actions/Actions.php:577]
#9 Piwik_Actions->archivePeriod(…) called at [:]
#10 call_user_func_array(…) called at [/var/piwik.git/libs/Event/Dispatcher.php:284]
#11 Event_Dispatcher->postNotification(…) called at [/var/piwik.git/core/PluginsManager.php:674]
#12 Piwik_PostEvent(…) called at [/var/piwik.git/core/ArchiveProcessing/Period.php:264]
#13 Piwik_ArchiveProcessing_Period->compute(…) called at [/var/piwik.git/core/ArchiveProcessing.php:485]
#14 Piwik_ArchiveProcessing->launchArchiving(…) called at [/var/piwik.git/core/Archive/Single.php:223]
#15 Piwik_Archive_Single->prepareArchive(…) called at [/var/piwik.git/core/Archive/Array/IndexedBySite.php:177]
#16 Piwik_Archive_Array_IndexedBySite->getArchiveIdsAfterLaunching(…) called at [/var/piwik.git/core/Archive/Array/IndexedBySite.php:122]
#17 Piwik_Archive_Array_IndexedBySite->loadValuesFromDB(…) called at [/var/piwik.git/core/Archive/Array/IndexedBySite.php:102]
#18 Piwik_Archive_Array_IndexedBySite->getValues(…) called at [/var/piwik.git/core/Archive/Array/IndexedBySite.php:70]
#19 Piwik_Archive_Array_IndexedBySite->getDataTableFromNumeric(…) called at [/var/piwik.git/plugins/MultiSites/API.php:213]
#20 Piwik_MultiSites_API->buildDataTable(…) called at [/var/piwik.git/plugins/MultiSites/API.php:112]
#21 Piwik_MultiSites_API->getAll(…) called at [/var/piwik.git/plugins/MultiSites/Controller.php:63]
#22 Piwik_MultiSites_Controller->getSitesInfo(…) called at [/var/piwik.git/plugins/MultiSites/Controller.php:35]
#23 Piwik_MultiSites_Controller->index(…) called at [:]
#24 call_user_func_array(…) called at [/var/piwik.git/core/FrontController.php:125]
#25 Piwik_FrontController->dispatch(…) called at [/var/piwik.git/index.php:47]