May try install VS2010 C++ redistributable
Reference: http://stackoverflow.com/questions/4718262/zeromq-dllnotfoundexception-using-net-bindings
Sorry, try Visual Studio 2013 C++ redistributable
Depending on your OS and version of zeroMQ you may need a different version of the Visual Studio C++ redistributable.
Reference: http://zeromq.org/distro:microsoft-windows