Have you read through the ultrabot forums? There are a couple of errors in the latest release that need changing, one being that the version was not updated in the .vbs file so you need to edit it and change
const sScriptVersion = "4.0"
const sSV = "40"
to
const sScriptVersion = "4.1"
const sSV = "41"
Other than that .. follow
these instructions on how to get harvester 1.00 working and see if you have problems with it. It is fairly easy to get working and that way we can see if it is just specific scripts that you are having problems with.