You must be logged on with Administrator privileges to the machine on which you are installing DesignBuilder.  Otherwise you will receive error messages during installation and the software will not run.

To check if you are Administrator, do the following:

1. Go to Start, Settings, Control Panel, Users and Passwords (or User Accounts).
2. Find the current username (yours) and look in the group column. It should say: 'Administrators' or 'Computer administrator'.
3. If this is not the case, contact your IT department to become Administrator, or to have someone with Administrator privileges install the program on the machine.

Updated 02.Nov.2016