This is an older build of DWCS6, Try updating to the newer 12.0.1 version that has been released:
dreamweaver-cs6-update-12-0-1.html
after installing the update, make sure to Delete the Dreamweaver Cache file from the users configuration folder:
common_installation_issues.php
@aidanwynne5442402: are you using the same 5808 build number?