Trouble Exporting Library from Macbook Pro to Mac Mini

After cataloging an extensive church library on my Macbook Pro, I'm trying to export the library to a clean copy of Delicious Library on my church's Mac Mini. Followed each step listed online to no result; even tried exporting and importing a text file, but all it listed was thousands of blank items, no covers or info.

Do I need to buy an extra license for the Mac Mini? I tried copying my license over as per the online instructions, but no luck: Delicious Library still didn't recognize the folder I copied over.

Macbook Pro is running Snow Leopard, and the Mac Mini is running Leopard or Snow Leopard, not sure which.