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WHIRLPOOL--

JoinCoin uses Whirlpool, not Whirlpoolx.  Spell out "whirlpool" completely in the wallet configuration file.  Type "algo" : "whirl" in the mining configuration file, or "-a whirl" on the launch line.  The Opening Page (OP) for JoinCoin states the Whirlpool is the default wallet algo, so you perhaps could skip it in the wallet configuration.  I did not.

My first attempt was with pentablake algo.  I do not know why it did not work.  Pentablake was very new at the launch for JoinCoin.  I only changed the algo configurations between the two attempts.  My GTX 960 runs at full speed (currently) mining Lyra2v2 and Quark.        --scryptr

P.S.  I now have 2 JoinCoins.     --scryptr