Crebbles

I have been uploading some Famicom missing media to Launchbox DB but for whatever reason Launchbox is not finding them within it's database when I attempt to download them. One example is "Columbus: Ougon no Yoake" for the Famicom.. I use the Download Images/Media button.. It finds no in-game screenshots that do exist in the DB.. It should be finding the game title, and 3 gameplay screens. I have this same problem with a few other Famicom games as well, and other games it downloads everything perfectly. I'm probably doing something simple wrong but it has me stumped regardless. If anyone can shed some light on this it would be much appreciated!