I created a new login for the database, updated the server connection on feudal tools and now when I try to initialise the server it fails to start and i get this line twice:
TTmod/core.cs (0): Unable to find object 'dbi' attempting to call function 'Update'

I tried fully uninstalling following the home page instructions and reinstalling TTmod but it seems not to help. I deleted the Nyuton database tables before I reinstalled TTmod but it doesn't seem to have helped. Any help would be much appreciated.

You have to update the database credentials in config_local.cs
Failing db connection on the server has nothing to do with TTmod.