Please note that map cache changes have been done for 3.1.6 release as well. So if you are upgrading from Dekho 3.1.6, you might see some error messages while running the upgrade scripts. The error messages will refer to the MAPLAYERDEF and MAPS tables. This is because the MAPLAYERDEF table and the ‘mxdinfo’ column in the ‘MAPS’ table would have already been added. This will not affect the upgrade and the error messages can be ignore. However, if you would still like some assistance please contact Esri Australia support.