Visits per number of pages error

Hi

When I go to the Visitors / Engagement / Visits per number of pages in table mode and click on Open row evolution I get the following error message. In cloud, piechart and bar chart mode it reports ok, its just in table mode that causes this error.

Thanks

Steven

There is an error. Please report the message (Piwik 1.12) and full backtrace in the Piwik forums (please do a Search first as it might have been reported already!).

Notice: Uninitialized string offset: 0 in /home/dev-ocean/public_html/analytics/piwik/plugins/CoreHome/DataTableRowAction/RowEvolution.php on line 78

Backtrace -->

#0 Piwik_ErrorHandler(...) called at [/home/dev-ocean/public_html/analytics/piwik/plugins/CoreHome/DataTableRowAction/RowEvolution.php:78]
#1 Piwik_CoreHome_DataTableRowAction_RowEvolution->__construct(...) called at [/home/dev-ocean/public_html/analytics/piwik/plugins/CoreHome/Controller.php:175]
#2 Piwik_CoreHome_Controller->makeRowEvolution(...) called at [/home/dev-ocean/public_html/analytics/piwik/plugins/CoreHome/Controller.php:137]
#3 Piwik_CoreHome_Controller->getRowEvolutionPopover(...) called at [:]
#4 call_user_func_array(...) called at [/home/dev-ocean/public_html/analytics/piwik/core/FrontController.php:125]
#5 Piwik_FrontController->dispatch(...) called at [/home/dev-ocean/public_html/analytics/piwik/index.php:47]