It seems there is a bug in the wireframe render in the info channel kernel
When set to wireframe rendering via IPR....the progress will never get past the 'updating GPUs' stage...
The solution for IPR is simply to change the info channel setting to any other output (depth,normals ect ect) then switch it back to wireframe and it will render...
However F9, and F10 you cannot do this trick...and wireframes simply wont render
I am running v 1.5 of the plugin
This was the case with the last version of the plugin 1.36