Don't use "run as administartor" on Opus, that will only make things worse.
I think what you've done is manually associate .dcf files with dopus.exe, which will result in what you're seeing. To correct that:
[ul][li]Right-click the .dcf file on the desktop.[/li]
[li]Choose Open With -> Choose default program...[/li]
[li]Make sure Keep this app for all .dcf files is checked.[/li]
[li]Choose Directory Opus Helper Application (not Directory Opus 10).[/li][/ul]
I think there's some confusion about the licences. Presumably you are seeing "Licences: 2" on the laptop. That means you have two licences in total, not that the machine is using two licences.
If you have already bought two licences, and assuming we are talking about Opus Pro and not Opus Light, then you are probably already covered for all three of your machines because Opus Pro gives you the right to use it on one personal laptop in addition to the main computers.
The box at the top of the Licence Manger window should summarise it like so: This certificate is valid for installation on up to 2 computers (plus one personal laptop for HOME/SOHO users only).