I guess what I was trying to ask is, how do I decrypt it?

This is what happens when I try to follow the normal directions on how to import a paper wallet into Litecoin-QT:

I opened up the debug window, typed in: walletpassphrase 'my password' '300'

I get the error message: Error: running with an unencrypted wallet, but walletpassphrase was called. (code -15)

I then typed in the debug window: importprivkey 'my private key'

I get the error message: Invalid private key (code -5)