errors after enabling the module

Hi,

got these errors when I opened a vocabulary to enable autocategorise. The screen is not built properly. (pls see attachment)

* Notice: Undefined index: in is_auto_vocab() (line 280 of /home/ab836/public_html/sites/all/modules/autocategorise/autocategorise.module).
* Notice: Undefined index: required in autocategorise_form_alter() (line 152 of /home/ab836/public_html/sites/all/modules/autocategorise/autocategorise.module).
* Notice: Undefined index: #description in autocategorise_form_alter() (line 152 of /home/ab836/public_html/sites/all/modules/autocategorise/autocategorise.module).