Oops, sorry, was thinking Palm OS when I wrote that for some reason. For Pocket PC the procedure is a bit more complicated, you'd want to use a registry editor (like the free one at http://www.phm.lu/Products/PocketPC/RegEdit/) to go to registry location HKEY_LOCAL_MACHINE\Software\Pleco Software\Pleco Dictionary and delete all of the keys listed under there to clear out your Pleco settings / unlocking info and start over. If your purchased software all works, though, it's unlikely that would make any difference, so you can probably just ignore the warning for now.
I'm glad the new E-C database is helping, proper nouns have been a source of complaints pretty much since Oxford Dict 1.0 came out in 2001 so it's nice to finally do something about that particular problem.
I'm glad the new E-C database is helping, proper nouns have been a source of complaints pretty much since Oxford Dict 1.0 came out in 2001 so it's nice to finally do something about that particular problem.