Installation - WLE8 will not open

I have just installed WL Elements 8, downloaded upgrade from v.7, but it will not open. Using Windows 8.1. Any suggestions, pls?

What exactly happens on screen?
Did you try rebooting?

Yes, tried rebooting.
All that happens when I click to open is a whirring blue disc for a short time, then nothing.

Try installing the latest driver:

and reboot.

Thanks. Happens that this is a brand new computer, so had to download eLicenser afresh.

Problem now solved. Installed the 8.0.3 update released 2 days ago, which hadn’t noticed previously.
Many thanks for your help.