Hi Jeff,
I have a similar problem to that which you resolved with sdopublishing
http://wordpress.org/support/topic/tml-settings-tab-disappeared-with-638-upgrade?replies=4
Basically I have the plugin active, and I could see the tab within my wordpress admin.
But now it seems to have disappeared so I can't amend some of the options.
Within your previous post, you asked about a caching plugin. I have W3T active. Do you believe that this could be causing an issue?
Also I know that the plugin is working as the custom login and profile pages are acting as normal. I just don't have a way to get to the options of the TML Plugin.
Cheers,
Tony