Sorry for the late response Jon,
Yes I tried clearing all the files. I upgraded to BCC 9.0.2d. I installed the new Sony Vegas Build 453 (just released). I uninstalled BCC 9 (using IO Uninstaller) to insure there were no artifacts left. Reinstalled BCC9. It still wont load the txt editor. It does not kill or lock Vegas; I simply close the window and continue working. All other BCCFX still work fine.
James