Technote Details :: Problems installing Dreamweaver extension
Issue
Extension installation is blocked or does not start.
Reason
Virus protection software can sometimes interfere with the installation Macromedia software or Dreamweaver extensions.
Solution
To prevent such problems, be sure to disable any virus protection software such as Norton or McAfee before installation.
Important notice: We strongly recommend you do not disable virus protection when installing extensions from unreliable sources.
For a successful installation, follow the general software installation guidelines from this Macromedia TechNote.