How to Model New 3D Units

[Dromikaites]

Unfortunately there's something I'm probably missing...Inspite the fact every vertex is weighted to one and only one bone with the "rigid" option and the value 1.0 that error is still preventing me to export the model to .cas

I checked the bones and vertexes one by one in the "Skin weight table". Is any other place I can check the status of the vertexes and bones?

Well, it turned out that not every vertex was weighted to one and only bone. Actually there were 2 vertexes not linked to any bone. But they were not those reported by the .CAS exporter. Since I was looking in the weight table for vertexes connected to two or more bones, I missed those.

The key learning points are:

1) Don't take ad-literam the .CAS exporter error messages (This doesn't mean in any way I'm not grateful to Vercingetorix for his wonderful tool - no modding of the models would be possible without it)
2) Take a very good look at the weight table.

Thank you all who tried to help me and I'm sorry I've wasted your time with my stupid lack of attention to detail.