Drongle McMahon wrote:
My guess, coming from Primstar, is that you have to start with the special sculpt meshes (Add->Sculpted mesh script), to get a mesh with the correct UV map. You can't use an existing mesh. Then you must only push vertices around, no adding or deleting and no extrusion. The UV map must stay as it is. This should all be described in the machinimatrix tutorials. Look at the recent one that explains how sculpties work. It helps a lot if you understand that clearly. Sorry if you already watched those.
Let me preface this response by saying that I have not used Jass2 or Primstar2. I have used Primstar1 on sculpts I've made in both blender 2.49 and 2.58. You don't have to use the built it sculpt mesh types. You can model your mesh from scratch, using extrudes, mirror modifiers, etc, but you have to keep in mind the max number of faces, and the layout of your mesh. If you do model from the ground up, you'll need to manually mark your own seams, and use the 'follow active quads' unwrap method. Then you must resize your uv layout to fully fit the uv space without overlapping verts.
The real key to getting the sculpt map to bake when using this workflow is to ensure that your uv layout is named properly. By default blender will call the first uv layout 'UVTex'. The Primstar scripts look for a layout called 'sculptie' to use for baking. You can rename the uv layout in blender. For blender 2.49 go to the 'Editing' buttons and in the 'Mesh' panel you'll find 'UV Texture'. In blender 2.58 you can find the 'UV Texture' panel in the 'Object Data' buttons. I would start by checking to see what your uv layout is named. Also, be sure that you have an image assigned for baking. Hope this helps.
NOTE: In the above image you should change the highlighted UVTex to read sculptie instead