I am aware of 'ul' conflict, but I haven't heard of it before, so I just hoped that it's not popular :x If you've found a bug in installation script then please post an issue at GitHub :)
Issue has already been reported: https://github.com/apaszke/termtile/issues/15
Had the same problem as those guys.
EDIT: (for those reading) .. the issue has now been fixed. Kudo's!
I just hit enter and it soldiered on and then I manually changed the aliases in my .bashrc file ..