I am not sure if I changed a permission or what, but I am all of a sudden unable to change, add or update a category.
I am able to open the page, but only have 'Restore', 'Delete', and 'Parameters' buttons. I restored one, but it only made things worst and unable to do anything more with it.

See screen shot: imgur.com/QliSV8B

Thanks for any help in advance!

You are viewing it under Trash item, select the dropdown and choose current

Screenshot - imgur.com/qZPrkXH