Unable to add an assembly created from ASP.Net (4.5) web site to GAC due to strong name failure

Hi,

I have created an ASP.Net 4.5 Empty website from which I need an assembly as output, which needs to be deployable in GAC. In that, I have updated the MSBuild project property option to "Use Fixed Naming and Single Page Assemblies" and "Enable Strong Naming on Precompiled Assemblies". I have also used a Key File generated with a Strong Name tool and I have used a valid file location for the snk file.

While publishing this website, I have used "Web Deploy Package" option with a valid location for the .zip file. Also, I have set "Merge all outputs to a single assembly" and "treat this as a library component". I have also unchecked"Allow pre-compiled site to be updatable." I have also unchecked the option to exclude files from App_Data folder.

In spite of all this, after I published, I am unable to add this assembly to GAC, from the extracted zip. I am getting an error in the command line, saying, "Failure to add assembly to cache: Attempt to install an assembly without a strong name." I am not able to figure out, what I am doing wrong. Can anyone please help?