Hey Adrian,

Can I please point out that this is the 'Latest News and Development' forum, and is for just that and discussion, not support. I'll move this post to the Pre-Membership Queries forum as it's the closest thing, but again it's not for support questions.

What you're seeing is not an error and in fact a warning as it states in the text you've pasted. In this case it's a compatibility issue between Simple Press core plugin and any Simple Press plugins you have installed. Please make sure all plugins are updated as well..

If you have any further questions please open up a topic in our support forum..