Dashboard Report

Strangest thing! On the dashboard I have a Summary Report for Revenue for the Year. I can click the Month (the Columns) and I can pull up the drilldown report for that specific month. However; if I click the Retailer (the Rows), or the $ amount in the month the drilldown report states "no records found". I can go into the Revenue folder and access the report there and everything functions as it should.

Any clues???