As you migrate (upgrade) from previous releases of Essbase to Release 6.5 (DB2 OLAP Server Version 8.1), keep in mind that Release 6.5 of Essbase Spreadsheet Add-in is designed to work with Release 6.5 of the Essbase server. If the Essbase system administrator upgrades the Essbase server to Release 6.5, Release 5.x of Essbase Spreadsheet Add-in works on only a limited basis. Upgrade to Essbase Spreadsheet Add-in for Release 6.5 as soon as possible.
Read the Installation Guide for detailed information about migrating from previous releases of Essbase.