The problem is that HemeshGui was made a long time ago for a different version of Hemesh. Each time a new version of Hemesh comes out there may be problems with backwards compatibility. Fortunately in this case it can be solved in a few easy steps. All of these steps refer to the hemesh tab.

1. Remove all the old import statements and replace them by these updated import statements.

1. import wblut.core.processing.*;
2. import wblut.hemesh.core.*;
3. import wblut.geom.core.*;
4. import wblut.hemesh.tools.*;
5. import wblut.hemesh.creators.*;
6. import wblut.hemesh.subdividors.*;
7. import wblut.hemesh.modifiers.*;

2. Replace all WB_Point by WB_Point3d.

3. Replace all WB_Vector by WB_Vector3d.

For steps 2 and 3 the fastest way is to use "replace all" (CTRL + F).

I tested it on HemeshGuiLight and with these changes it ran fine.

thanks!

Change...

1.   myShape.triangulateFaces();

...to...

1.   myShape.triangulate();

thanks for your help!