headertag controller v2.1

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hello,
i got a little problem with the mysql file from the headertag controller, maybe someone like to help out.
[code]ALTER TABLE products_description ADD products_head_title_tag VARCHAR(80) NULL;
ALTER TABLE products_description ADD products_head_desc_tag LONGTEXT(300) NULL;
ALTER TABLE products_description ADD products_head_keywords_tag LONGTEXT(300) NULL;[/code]
this looks to me, that this mysql file creats 3 entrys in products_description that are needed for the headertag controller.
if i look in my phpmyadmin i see there a entry with products_head_title_tag in products_descrition. i doesent can import the other two entrys in products_description. dont know what i`m doing wrong. maybe someone who have installed this "hack" can help me out with the basic installation from the mysql file. i doesent like to crash my database from the shop  :wink: 
tx and regards
slicks