Project Generator will not import

I’m having a problem with projectGenerator.exe refusing to import any project.
I’m using of_v0.9.8_vs_release with VS2015 under Windows 10

It shows me the folder selection window, I choose the folder and it comes back without any of the addons imported.

It does this for any of my projects, so its not related to a particular project.
I have it on two different machines and its the same on both.
I have an old installation of of_v0.9.7_vs_release and it works OK on that.
I’m pretty sure I have used it without any problem since updating to v0.9.8 several months ago

Anyone have any ideas what might be happening or how I could debug it?