Hi folks, I'm just wondering if any of you are having "fun" using Carrara's 3D paint program.  I think I got a handle on it finally! 

If any of you are having problems--like I did getting the paint portion to work.  For me,  it would work sometimes and sometimes it didn't.

Here is what I found.

       The 3D paint program must be used in the assembly room
       There must be a texture.jpg etc assigned to the object first
       The object must not be grouped.
       Not all textures work (I could apply the texture; however, I couldn't paint over it) and I had
       to "re-package" that texture before I could paint over it.  It's the same for ZBrush. 
       Some .obj can be painted over, others can't.

How to re-package the texture map.  Use you favorite 2D software program, create a new canvas and paste the texture map to it and save.  

Now why do some textures work and others don't--I don't have a clue (to me a .jpg is a .jpg, a .bmp is a .bmp) ?  Jan

Could it be how the jpg texture is saved? Perhaps a "non-progressive" jpg is what Carrara likes?

Just a guess here...?

 This usually is an issue with the UV mapping and whether the texture displays correctly or not and not the actually file itself. (.jpg etc.)