You should only install the Millennium SDK SOAP Client.msi file for development purposes. This installer places a file named Millennium.SDK SoapClient Merge Module.msm (a merge module) into the ...\Common Files\Merge Modules folder. You must include this MSM must in your installation package in order to redistribute the Millennium SDK SOAP Client properly. This MSM places the Millennium SDK SOAP client assemblies into the GAC (Global Assembly Cache).