Thanks, being able to see the map was a big help, and I think it’s working now.
I found two issues:
1. For the title, it’s ‘poi.title’ not ‘post.title’
2. The plugin uses the default template when viewing a mashup in the admin. But for some reason, you site was setting the admin flag even when viewing the mashup on the frontend.
For #2, I removed the admin check in the copy of MapPress that is on your site. I’ll also include that change in the next release.