well, i spent my weekend just tryin to fix the pm v2 code :p !!
yup, you have to add the 4 or 5 fields in the pm_table
and if you add the prefix you might get 4images_pm error !!
blank page !! ( well, did u add the main.php ??? ) i got the same error coz of that
btw, is seach working well with ya !! hope so !! coz i got error if member run any kind of seach in my site !