ok. in the 1st config for XMRSTAK that was put out there was a problem with the pools.txt file.
please change "use_nicehash" : true to "use_nicehash" : false
then you will be ok.
or
just re-download the program and use that. the only thing you need to do it add your wallet in the pools.txt. there is batch files to start the miner. so you can choose to use GPU, CPU/GPU or just CPU. all you need to do is double click the one you want to run.. easy peasy!
good luck! Happy Mining!
If you have been banned from the server for this slight messup. please message Coins4Hash with your IP address and he will endevour to have it removed as fast as possible!