And finally i tryed with X normal (a freeware very cool tool) and the result is this: PERFECT. The tragic question is that EVERY time that you have a ISLAND in the UV the vertex COLOR is DAMAGED and the TANGENT calculation toon. I work perfct with OBJECT SPACE ALBEDO, DEPTH, MATCOLOR, OCCLUSION. But...

Me too, i continue to explain:

I maded a test in OBJECT SPACE, and the render i PERFECT.

See image bug_4.jpg.
Than i changed UV and i maded another test. The bulge change too seeking the new UV setup.

Hi every one, i'm new on this site. But appear that is the best xsi site, so i can talk with all XSI user finally and try understand why ULTIMAPPER still buggy from xsi 3.5 until today. Possible that SOFTIMAGE before, and AUTODESK today never correct a tragic bug in the NORMAL MAP tangent space...? ...