...Just a followup.. I undid all queries, and redid all 13 queries again...
Then I tried to install new games (asteroids, xmas boarding as examples) and when I install them everything works EXCEPT the thumbnail uploads.. I set the path in the little box (via browse) to the filename, then hit submit. Everything submits properly EXCEPT the thumbnails. I haven't yet tried with the crown pics uploads as I wasn't as interested in that but I may try that too.
Now, if I go into the database and manually set the filename inside the correct database row it shows perfectly inside proarcade.php as well as perfectly inside the CP!
Any pointers with this fairly minor issue?