If you have the NextGen ImageFlow plugin installed and activated and were trying to update WordPress to version 3.8 and you get a page that says something like, “You are not allowed to call this page directly” when you click on update now for WordPress, I have a simple fix for you.
Deactivate the plugin and then click on update now for WordPress. WordPress will update and then you can reactivate the NextGen ImageFlow.
As always, it’s a good rule of thumb to deactivate all your plugins before updating WordPress, which you can read about in my post “Don’t Update WordPress Until You Take These 8 Steps”
If you’ve had any problems while updating WordPress, please leave your comment or challenge below.