We've been using Sitefinity without issue for several months now. However, one of our developers has started getting the above error when accessing his development environment.
We aren't getting problems anywhere else, and the developer has not changed any environment/connectivity settings before the issue started appearing.
Any advice would be appreciated. We are not using multiple sites, we have not renamed the project and sf_page_node with the same ID exists in the database.
Thanks for your time,
Turns out one of our devs deleted the database over the weekend so we were using the auto-created one.
Lesson learnt: better comms needed!