OK so maybe this is a silly question...

If this is a clean install why install the Express version then upgrade to standard. Why not just install Standard edition from the get go? Are you actually doing an upgrade or are you installing a second instance? In the ORacle world, are you upgrading or installing a new ora_home (at least I think that somewhat of an approximation from the last time I installed oracle 3+ years ago)?

It looks like the user you are using to run the install doesn't have access to one of the registry keys it needs to modify. Are you using an account with admin rights on the local machine to run the install?

-Luke.