http://bitbucket.org/tortoisehg/targz/downloads/tortoisehg-2.9.tar.gz seems to be bad. Running thg from it fails with "No module named qtapp". Comparing the tar with the shows that both tortoisehg/hgqt/qtapp.py and lots of other files are missing.
Please respin that file. (Using the same or a different name both have advantages and disadvantages.)