The Trainer and Editor had the same filename as the above.
I renamed the Editor filename to: 18787e-[my username]-Borderlands 2 Editor.exe
It was probably not necessary to add the "e" after the "18787".
That fixed the problem for me.
OK thanks, i don't use the editor just trainer for me. Thanks
i just downloaded the latest editor, and the editor i got. so all works fine.