@Themehorse As this is related to Event Manager plugin, perhaps the plugin author/support might provide you better support. Also, the plugin may not be fully compatible with our theme.
The plugin IS compatible with the theme. Apparently not with the slider though. It’s a plugin. Perhaps you could take a moment to test and see why it breaks? It does have a post id but your slider doesn’t see it. So I assume it is something about the filters you use in your query for posts.