Suprnova pool is on the right blockchain?
Here is solo mining tutorial (I personally recommend some pool for example http://shf.miners-zone.net):
1. download latest gshift from http://www.shiftnrg.org/#download
2. run it with these parameters (run this only if you sure you have shiftbase):
3. wait for syncing blocks (latest block you can find on our network stats page: http://stats.shiftnrg.org)
4. check if your gshift have shiftbase - type in console
4.1 if you creating new wallet you should get result: null - there is needed create new shiftbase it can be done over this command:
5. exit all instances gshift
6. run again gshift with commands (in point 2.) wait for latest block (point 3.)
7. run your miner - this is just example you will need maybe define another parameters due different graphics card:
Suprnova isnt on right blockchain because pool operator isnt updated gshift so its not syncing with network anymore. Also that pool had announcement about closing and was removed from official pool list.