QHull Problem - Works with automatic points but not with manual

Hi all,

I'm wondering if anybody has a solution to this problem regarding using QHull.

• I have successfully installed QHull and pointed Grasshopper to it
• The Dimitrie Andrei Stefanescu & Han Feng definition works correctly from this site http://improved.ro/blog/2011/06/gh-3d-voronoi-for-grasshopper-update/
• I tried putting in my own manually made points but the definition fails
• The error is "Input string was not in a correct format"
• When I look at the 'automatic' and manual points, both are entering the definition on the branch {0} and both are point3d
• The automatic and manually made points do start on different paths - {0;0} and {0} respectively - but I can't see this making a difference as the input to the definition is flattened

Is there a difference between points sourced within Rhino or is there some other error at foot?

Any help is welcome.

Regards,

Z