working with ms (call it bs!)

Stefan Haefliger writes:

writing my perliminary thesis on open office (needless to say) i�m sending freezes to my office in .doc format. today i opened one of these freezes to check the formulas, and as somewhat expected, word could not display the open office math stuff. but worse than that, word displayed the following warning!”

Screenshot of dialog box
It translates approximately to
“Word could not [process|handle|modify] Microsoft”.
P.S. I saw the dialog box as well. This is no mock up!