I have been running around in circles lately with all sorts of issues. This module actually broke my site:
It will allow you to save changes to a node that you are editing without leaving the node edit screen. but it does this in part by overriding the Panel Page node add/edit screen. and what happened with my site is that I was unable to get rid of its override. This is a big deal for me because I have several variants that use the node add/edit screen from Panels. So I was in a position where I could not remove the override. Even when I disabled the module, uninstalled it and removed it from the code base. Very bad.
I ended up having my hosting company (the WONDERFUL Blackmesh.com) restore the server completely. And I will say that Blackmesh was able to do this in about 30 minutes from the time of request with no issues at all. From 1 AM that morning. Very good.
So, I am back to the work at hand, and quickly at that.