Bug in OS X Rated 1 out of 5 stars
Initial window for some sort of acceptance (I'm guessing) pops up when trying to access the preferences from either the tools menu or the add-ons in preferences. Unfortunately, the window is almost entirely off the screen in the upper left, and cannot be moved or the acknowledge button clicked. Therefore, it's currently useless for OS X.
Checked on two different computers with OS X (10.6x and 10.5x) with identical results.