Check your .litecoin/debug.log file and search for the block's hash. If it was invalid, the debug.log should say so. If it was valid, your debug.log should say something else, like UpdateTip (if you mined this block before your local node had heard of any other blocks). Feel free to post part of the log if you want help analyzing it. `grep -C 20 ~/.litecoin/debug.log` will find all lines that are within 20 lines of a line containing .

Once my code is working and tested with altcoins (e.g. Litecoin), I will submit a pull request and ask forrestv to merge it in.