MasterCard BIN 2 patch


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This is a patch for Zen Cart Versions 1.5.5a and older ONLY.  MasterCard has begun issuing credit card numbers starting with #2, which is not a part of Zen Cart coding.  If you accept MasterCard and someone uses one of the newer card numbers beginning with #2, the order will not go through.

It is always best to have your store operating at the latest version of Zen Cart.  However, if you just need a fix, we are offering it here.


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