Unknown Space in Livery

Hi,right now i'm working on a 747 Frighter Livery... I painted the left fuselage, cut everything with the cut-template and fit everything perfectly (i hope so) in the 747400_Fuse_Layout_Template. After that i saved it in DDS5-format (another try was to save it in extended BMP) with DXTBmp. But i have this little space in my livery... Have someone a solution for that or can tell me where i made a mistake? By the way this space-failure only happens between the front and the middle section.Thx,Andy