[deathemperor]

Can you reimport the xml product file and choose replace ?

if that doesn't work, please try reinstall it by running the following queries:

[mysql] DELETE FROM `profilefield` WHERE `profilefieldid` IN(51,52,53,54,55,56,57,58,59,60,61,62,63,64,65)
ALTER TABLE `userfield` DROP `field50`, DROP `field51`, DROP `field52`, DROP `field53`, DROP `field54`, DROP `field55`, DROP `field56`, DROP `field57`, DROP `field58`, DROP `field59`, DROP `field60`, DROP `field61`, DROP `field62`, DROP `field63`, DROP `field64`, DROP `field65`
OPTIMIZE TABLE userfield
[/mysql]
one line a time

after that reinstall the hack.