Green tinge to repaint????

Hey guys,
I've been repainting for quite some time now, but was hoping some of you other guys could help me with a little problem I come across every now and again.
Sometimes after I have imported the .bmp back into the texture dir, then go and view the aircraft - the panel lines have gone from grey to a slightly weird greenish colour, as well as some smaller areas on the textures themselves.
Am I doing something wrong, or is there a way to stop it from happening.
I currently use Paintshop Pro to paint and DXT BMP to transfer etc.
Thanks.
I've been repainting for quite some time now, but was hoping some of you other guys could help me with a little problem I come across every now and again.
Sometimes after I have imported the .bmp back into the texture dir, then go and view the aircraft - the panel lines have gone from grey to a slightly weird greenish colour, as well as some smaller areas on the textures themselves.
Am I doing something wrong, or is there a way to stop it from happening.
I currently use Paintshop Pro to paint and DXT BMP to transfer etc.
Thanks.