Issue #2467 resolved
pyqt version detection uses strings instead of ints
TortoiseHg requires Qt 4.6 and PyQt 4.7 You have Qt 4.8.4 and PyQt 4.10
Obviously PyQt 4.10 is newer than PyQt 4.7, but string-based comparison fails the test in qtlib.py. Converting the elements to ints before comparison fixes the problem.