Hello how are you doing.

I UV mapped a vehicle's door (front passenger side), but after it, a strange black stripe appears although the texture is white and I selected all the polygons to map:

 

BEFORE:

 

AFTER:

 

GTA:

 

UV Mapper:

 

As you can see its visible ingame and the texture is completely white (except for the hwaypatrol letters but it has nothing to do with it.) 
It's really annoying, any ideas?

Bump

Fixed. Just did the UV map from zero again.