Hey there,
I did a quick render in cycles which looked OK so i thought the mapping and bake is cool.
I again used the same bake as texture in blender internal and it got the same problem.
So i checked for the padding.... And yes you are totally right. I didnt knew that this is even possible to adjust. All tutorials didn't use this setting.
So after giving each island/face a margin everything looked much better.
Thanks a lot for pointing me into the right direction. Do you know a tutorial which maybe talks exactly about this and other texture issues?
@Ghost said:
Without looking at your UV map or normal map, my best guess would be that you need more padding along your UV edges.
Also trying rendering the same model / normal map in blender or another app to see if you get the same black lines effect.