I just upgraded to 2.5.1 last night. Now when I try to add a custom field to a post (such as thumbnail), I get this error:
"An unidentified error has occurred."
Is anyone else having this problem and what can be done to fix it.
I've noticed several other less urgent but annoying bugs with 2.5.1. Like the categories list not showing up when entering a post. And not getting email alerts.
How buggy is this version? Should I revert back to 2.5? Has anyone had to do that?