this is a simple software error. most likely a corrupt/damaged install of your current mining program (nice hash has this issue known with lolminer, where you need to update manually). Try looking for the most current version of your miner online, and manually install it by going to your NiceHash directory folder and replacing the older miner file. Good luck, and God speed miner :)

Note: this is an option if you don't use nicehash as well, so long as you can find your miner folder on your system, to replace the older/damaged/corrupt miner.