Either you have not defined a dynamic site, or you do not have a dynamic page open.
In order to use SecurityAssist in a Dreamweaver site you must make sure the following has been done:
1. Create a site in Dreamweaver including the local info and testing server.
2. For the testing server you will need to specify the server model or language you will be working in. You will also need to have the access portion specified.
3. Open up a page that matches the server model you choose for the testing server and save this page to the site.
4. With the page open you can use the SecurityAssist Wizard.