Report Gives Error: No columns Specified to Show on Report
Make sure that the report has columns selected in the "Report Tab"
If there is no "Display Columns" selector on the "Report Tab" go to the "Setup" tab, click the "Fields" selector and add the "Display Columns" option. Then the "Display Columns" will show up and you can select whatever columns you want to include in the report.
Contact us if there are still problems!