1. Create a new installation package in your GravityZone console, only with the Antimalware module enabled and the Remove competitors option disabled.
 
2. Download and run the installation kit on your endpoint.
 
3. After BEST is installed, send a Reconfigure client task, from your GravityZone console and add/install the other modules on your endpoint:
 
http://www.bitdefender.com/support/troubleshooting-endpoint-protection-with-the-reconfigure-client-task-1905.html