I found the problem... It is not GH it is RhinoCAM. I to Options, Plug-ins, Enable Load Protection and did not load the RhinoCam Plug in, then, type GH as usual and it runs....
Thanks for following up Andres. I have a vague memory this came up before. There's no good reason why RhinoCam could screw over a piece of pure Grasshopper code. At least no good reason I know of. I'll bring it up at the mcneel developer meeting today, perhaps someone else has an idea what's going on here.