well i corrected it. used new texture only on body -> more than one materials.

now i'm able to export my model properly as long as i have all vertices weighted to bone_abs and in the diagram-view linked body to some bone (in the scene root element).

as soon as i change anything ( weighten head vertices to bone_head or sth. like that) i still can export but i'm only shown weapon and shield (in some mad places) i think my diagram isn't correct, but i'm not getting the point.
what must the array be to work all right? could you maybe post an image showing a correct diagram?

thanks for your patience with me