The stasis chamber is hard to get the right angle on when you go to open it.  I was able to do it by mousing over a tangent point on the lower part of the sphere.  Basically, I turned my view so that I could click the side of the chamber...then it worked.  Was a *VERY* precise spot - less than a mm off and you wont be able to click it.  Hopefully this helps.

Oh and a good depiction of a tangent:
http://www.math.psu.edu/geom/koltsova/image160.gif
basically, only touches the circle (in this case sphere) at one point.

Posting screenshot when done w/ instance (used the last chamber in the instance, same deal =)

Thegreatiam, Hyjal