It's probably mean you have an error when you run the patcher.
Some of the patches can't be enable at same time, like:
Quote:
# The following two patches are alternatives, don't enable more than one.
#
# `My 10 line spacing values`
# `My 24 line spacing values`
|
So if you enable both of them you will get an error, and it will not generate a KoboRoot.tgz file.