What's the situation you're in that you need to set the Director authoring application up to silently install? Are you deploying Director from a server to a bunch of computers on the network?
Deploying to muti-workstations using SCCM and SMS. This is a push to specific workstation.
I was having the same problem, at some point I realized that my --record=1 (install.xml) was removign the EULA and the override file was doing the same thing. So, this is how my application.xml.override looks
<?xml version="1.0" encoding="utf-8"?>
<Data key="Serial" protected="0">zzzzzzzzzzzzzzzzzzz</Data>
I have removed the updates (as per my environment) and the EULA suppress. With that, I can run a silent install and don't have the problem. So far it is working. Good luck.