If there is a problem with the Windows registry keys in the Lotus Notes Client or the Domino Server, you may receive the following error:
IBM Lotus Notes does not have a production license. A temporary evaluation license has been enrolled for you to use for 60 days.
'An error occurred during license use management initialization'
The error commonly occurs when your are installing multiple client versions or servers on a single machine, manually hacking the registry, or even trying to get Notes 8 working on a stick.
In the forums and several blogs there have been several workarounds to the error/warnings which I have debated on posting for 'testing purposes'.
As a best practice - IBM recommends one Notes Client per machine and not hacking your registry. Reinstalling the software will make the error go away,