WireShader Pro+ is a shader plugin.
Check out this FAQ for C4D shaders..
Also this new solution..
The most common reason for not being able to see the plugin is that you may have purchased a Single User License and that you are trying to run this on over a license server, which will not work. check the console to see if there is a license error message covering this.
For a License server, you need to obtain a multi-user License for the number of machine in your network.