Using DSC to Install Apache on CentOS 6.7

My configuration file is:

Configuration DSCLinux02
{
    Import-DSCResource -Module nx
    
    Node "10.0.0.7" {
        nxPackage httpdInstall
        {
            Name = "httpd"
            Ensure = "Present"
            PackageManager = "Yum"
        }
 
    }
}

My MOF is:

/*
@TargetNode='10.0.0.7'
@GeneratedBy=DomainAdmin
@GenerationDate=04/28/2016 16:55:03
@GenerationHost=SA-DSC-SRV1
*/

instance of MSFT_nxPackageResource as $MSFT_nxPackageResource1ref
{
ResourceID = "[nxPackage]httpdInstall";
 Ensure = "Present";
 SourceInfo = "::6::9::nxPackage";
 Name = "httpd";
 ModuleName = "nx";
 PackageManager = "Yum";
 ModuleVersion = "1.0";

};

instance of OMI_ConfigurationDocument
{
 Version="1.0.0";
 Author="DomainAdmin";
 GenerationDate="04/28/2016 16:55:03";
 GenerationHost="SA-DSC-SRV1";
};

My Error is:

Loading the instance document from the pending location did not succeed.
    + CategoryInfo          : NotSpecified: (root/Microsoft/...gurationManager:String) [], CimException
    + FullyQualifiedErrorId : OMI:MI_Result:1
    + PSComputerName        : 10.0.0.7

What version of the DSC for Linux agent are you using?