i have created a simple report on account and contact. and calling this report using reporting api like:--
<apex:page > <analytics:reportChart reportId="00O28000002jhwW"/> </apex:page>
This visualforce page is called as a home page wide component. first time when home/home.jsp is loads its look good.But when i am changing the grouping criteria it show error.
The report chart is not available because the running user doesn't have access to a field used for grouping or aggregation.
how ever my user profile is system administrator and given permission to all object view All. and on field too.
i have changed the report created a report for case field and given all permission on FLS.The screen shot is atteched.even than the issue is same.