Webi report returns no data

Hi,

One of my user is running a cross tab webi report.He can see the data in the report.

Now when i refresh the report , it returns blank report.I checked the Universe and there is no Row level security implemented.

When i click on "Structure" its shows that the objects and variables are mapped with the report rows/columns.

Now for testing purpose i added a new tab and dragged the objects and the data displayed in the report.Now i saved this as a new report(With Different name) and when reopened again all the tabs of the report shows blank.

If any one has faced similar issue then please help me out.

Thank in advance!

Regards

Faizan