Could it be, that the (extremely useful) Plugin Site Page Extra isn't compatible with gpEasy 4.5? If I edit a Site Page Extra content in frontend, I can't save it. When I click the save button, the content isn't saved, instead the administration of Site Page Extra is shown:
In template.php I use
No problems with gpEasy 4.4. Or am I doing something wrong?
Um, looks quite similar to this issue.
Unfortunately I don't know what exactly the cause was and how Josh fixed it, so ...
Josh please take a look.