Hello
Going to need a bit more information.
You say "installing", so is this a FRESH INSTALL or is this an UPGRADE from a previous AMS version (and if so, what was the previous version of AMS that you were upgrading from)?
Also, which version of XF?
Things like this I really need access to the site and DB, so could you inbox me Admin CP credentials (full admin) as well as phpMyAdmin credentials?