Thanks for the reply. Nope, I'm not using quotations. I'm typing it just like you did. Is there another step I have to do before just typing in the private key? Like, do I have to type in the public key first somewhere in Litecoin-QT? Basically the Piper printer prints out a paper slip that has the public and private key on it. I typed the private key in letter by letter multiple times and keep getting the same error code. There are definitely coins at the address because I can see them in the litecoin block explorer.
Assuming you are not making any errors when typing in the private key, it sounds like there is an error in Litecoin-Qt.
While this may be possible, I'd expect more people to be complaining about it.
it seems much more likely that you are not typing the private key correctly. Probably making the same mistake every time.
Perhaps you are looking at an o and thinking it is a 0?
Maybe you are looking at a 1 and thinking it is an l or an I?
Any chance you are trying to import a Bitcoin private key into Litecoin?