Hi pixelhouse, in order to generate that kind of high density surface to a milling machine you'll probably need it to be generated in a polygon mesh modeling program rather than in a CAD modeling program like MoI.

I would guess that you're probably running out of memory and that's causing some side effects like the script processing not working.

The only way I could know for sure if that's the problem is if I could reproduce the error over here, which I can try if you send me the image file and instructions on how you're generating the object. If the image file is particularly large you may need to upload it to a file sharing service like Dropbox, etc... and then e-mail me the link at moi@moi3d.com

- Michael