As explained in the forum post:
http://forum.piwik.org/read.php?2,94533,94575#msg-94575
I am trying to do the following:
The error I see is (if I manually open the url in the browser):
The DataTable object has not yet been created
Stacktrace:
0 /path/to/piwik/plugins/Actions/Controller.php(386): Piwik_ViewDataTable->getDataTable()
1 /path/to/piwik/plugins/Actions/Controller.php(332): Piwik_Actions_Controller->configureGenericViewActions(Object(Piwik_ViewDataTable_HtmlTable))
2 /path/to/piwik/plugins/Actions/Controller.php(81): Piwik_Actions_Controller->configureViewActions(Object(Piwik_ViewDataTable_HtmlTable))
3 function: Piwik_Actions_Controller->getEntryPageUrls()
4 /path/to/piwik/core/FrontController.php(138): call_user_func_array(Array, Array)
5 /path/to/piwik/index.php(53): Piwik_FrontController->dispatch()
6 {main}
Opening a ticket as requested by Matt.
P.S. I am pretty sure it was working in release 1.8.3
Keywords: API export flatten
(In [7491]) Fixes #3432, allow filter_pattern_recursive to be used w/ flat=1 & add test for flat=1&expanded=1.