I don't see any formulas, just a white "placeholder" on the 64-bit version of Google Chrome. I have this problem at the university (with Chrome 64-bit as well). Is this coincidence or is there something wrong?
It certainly used to work!
Works fine for us in Chrome 7 (current released version) on Windows.
Do you also have this problem in Firefox?
Update to Chrome 8 beta (64bit) and your problem will be solved!