Nicely structured AppleScript (which is not an easy feat).
Still, a very interesting little bit of scripting to solve a common, age-old problem.
What is the bug you're talking about?
I just hit enter and it soldiered on and then I manually changed the aliases in my .bashrc file ..
Had the same problem as those guys.
EDIT: (for those reading) .. the issue has now been fixed. Kudo's!