Do you have the NxtMint.conf and NxtMint.properties
in the correct folder?
That would be something like: C:\Users\*yourusername*\AppData\Roaming\NxtMint
Another common problem: if you don't see the file extensions it could be possible, that your
NxtMint.conf is named NxtMint.conf.conf
Please check that
Thank you for the replies! the problem seems to be that the NxtMint.properties file wasn't created when I first ran the minter, everything is working now. Thank you!