I've noticed that when I have Visual Assist X (10.5.1738.0) for C++ turned on in VS2008, the context menu that pops up for my breakpoints does not include the conditional options such as Location, Condition, Hit Count, Filter, and When Hit.
Also, if you want to keep that menu, you can right-click on the line that has the breakpoint rather than the margin to get the IDE context menu you are expecting.