You will have to (1) uninstall your current version and (2)manually purge your registry of all remaining entries related to Logos. Somewhere in there are entries that tell the new installation you had the Gold version. Afterwards re-install your licensed copy and it should work without errors. Even this may not solve your problem as some registry entries on a PC are too cryptic without actual identifiers, like "Logos", but this is what I would try and it may work. In the event you still have errors, you may try uninstalling the current version and rolling back your entire registry, using the System Restore function. to a date prior to your installation of the Gold version...if that time was not too long ago. The PC System Restore function does not keep but a few restoration snapshots, so if you installed the Gold version months ago you may be out of luck using System Restore. Also, using System Restore is draconian as anything you may have installed since that restore point date is also lost in the registry. You will find yourself having to reinstall other software, getting past system updates reinstalled, etc.
If you are uncomfortable working in your registry, you should not try this as you could do some serious damage. In this case, take your lumps and come clean with Logos seeing if they can help you eliminate the troublesome registry entry that was left behind.
AMR