I keep getting an error while trying to save a page, or publish a draft with a clean installation of v4.2. Attached you'll find the screenshots. One's while trying to save/publish the page while in 'edit' mode, the other from the page overview 'more actions>publish' command. I've tried editing a masterpage, added some generic content and news and that all goes smoothly, just the page saving/publishing is malfunctioning. --- Downloaded the Sitefinity_4.2.1650.0.msi, ran it. Choose upgrade and was left with an empty project manager. Selected new project, gave it a name, a folder and selected for SQL Server, after install finished ran administration from project manager. After the errors, deleted the entire project and repeated it with Chrome instead of latest FF, same happens. --- I still have the v4.1 SDK installed on this system in the Sitefinity 4.1 folder in case that might be the culprit....