Abort Error Loading View (BEx workbook Refresh problem)

Hi Experts,

Please help in solving following issue.

When I try to refresh the report using the "refresh" icon on the BEx toolbar we get an "Abort loading view" error which wants to disconnect however if I right click in the report and select "refresh query" or I use the "Change Variable values" in the BEx toolbar the report will refresh successfully.

Thnx

Navesh