what version of Dreamweaver are you using?
The version of form builder you have installed is a rather old one, make sure that you are installing that version of Form builder before installing HTML Editor, Security Assist and Data Assist.
those stand alone versions that you are using have been discontinued. I would suggest looking into upgrading to the newer Design Extender, Data Bridge, and Free tools extensions. They offer a Number of Upgrades over your current versions (Form Builder 2, Data Assist 3, updates to Pro Maps as a few examples)