Philips offers this on My Registered Products page:
This product comes bundled with supporting PC software. Click below to download the software and retrieve your licence key.
+ MediaManager + Server

On downloading it offers a button:
Your personal license key(s): 'Retrieve license key'

However, the 'Retrieve license key' button does absolutely nothing. I tried both with Chrome and Internet Explorer to see if it was a browser-related issue, but apparently not.

Any ideas how to get the license key? The software wouldn't install without it.

My product: Philips 5000 series Smart LED TV 46PFL5007K