H5P + WP/ProjectNami + SQL Server

Has anyone successfully installed H5P on the Project Nami version of Wordpress for use with MS SQL Server?

I'm getting the below error when I attempt to activate and a pile of SQL errors looking for tables that don't exist when I deactivate/delete.

The plugin generated 5940 characters of unexpected output during activation. If you notice “headers already sent” messages, problems with syndication feeds or other issues, try deactivating or removing this plugin.

Any help is much appreciated.