We have about eight sections on our webpage, of which 7 of them work correctly - you can log-in with the edit account, of which the account has a group that has been placed in the web.config - however the 8th for some reason comes up with an access denied message. You can then click the edit tab, and be presented with the edit boxes, but then when you try and save, you get access denied again/you cannot preview the page.
Is strange, as this section is a copy of the others, and nothing has been changed?
Can we clarify exactly where permissions need to be set? We have a user, in a group, that is in the relevant section of the web.config - also the user is set to be able to see the page on the site.
Are you using the same page type/page template for all those eight sections? You can set/view the permissions for that page in edit mode make sure it's correct, also make sure that the user has access to all resources (eg. images in VPP).