Um if you're looking for help you may want to go to the support forums and not the Act 3 script runs. Here people just download and comment on the runs and report bugs that's why no one is replying to this because you're in the wrong section.
First of all you should read and follow the manual which is in the demonbuddy folder under help. It list what you need to have installed on your computer and make sure your demonbuddy is running on administrator and diablo 3 is running in windows mode.