There is a problem with a beta version of Office that went out after we submitted the templates to Microsoft. That problem should be fixed next week, but in the meantime, if you have this build, it does not work correctly. I know some people are anxious to try the new Showcases, but we must ask for your patience.
The problem is in version 2305 Build 16421.20000
It is in a beta channel and hopefully very few people will have received it. If you are one of them, our apologies. We broke new ground with features in these templates, and that doesn't always follow a bump-free path.
Microsoft