Not sure what you mean by "In fact none of the showcase preferences show up" as there is only ONE Showcase preference on the Preferences Settings area. It could be another addon that is interfering. I can't troubleshoot on a site that works, so I'd need to have access to your site (an Admin CP login with full admin access) to start with.Hmm, just realised that this doesn't appear to be an option on both my installations. In fact none of the showcase preferences show up. Any suggestions?
Conflicts between Addons are sometimes unavoidable (specially when an addon isn't doing something properly). If the options don't show up, its because another addon is doing TM on the same "FIND" and not replacing it (which will cause other TM's that are using that same "FIND" to fail).Interesting that you think some other addons may conflict. I've just gone and turned them all off and then back on again. Hey presto the option appears!