Please read this from the TX-1 forum regarding which line of code needs to be changed for Tv bracketing to start properly.
Bracketing
Ehm... I must be looking someplace wrong, but
which line of code? And
how is it supposed to be changed?
When you manage to procure this information, Kitty, and verify that the result is as expected, you may then perhaps post in the development thread, to attract attention of those with write access to the source trunk.