Forums / Cotonti / Support / Genoa -> Siena upgrade problem.

This is strange because com_html column presents in sed_com table since Cotonti 0.6.1. Before performing the upgrade, could you check in phpMyAdmin if that column exists in sed_com table of your Genoa dump? If it doesn't exist, run this SQL query:

ALTER TABLE `sed_com` ADD `com_html` text collate utf8_unicode_ci;

And then upgrade again.