Error while deleting category

[Nobody]

The category seems to be deleted, but I got some error messages on the next page. Anyone has any ideas of what is causing these error messages?

Something about "SmartyValidate: 8validate plugin] form 'dir_categs_edit' is not registred."

[mikerock]

I get this same error when deleting categories. (category does seem to get deleted though)

[yktan]

I can't replicate the error. Are you sure you've uploaded all the files completely?