http://bugs.winehq.org/show_bug.cgi?id=5264
--- Comment #26 from Mike Kaplinskiy mike.kaplinskiy@gmail.com 2009-02-22 15:05:15 --- (In reply to comment #25)
Setting an override for usp10.dll in Word 2007 fixes the Equation Tools, not the Equation Editor. They are not the same thing. Equation Tools are opened by clicking Insert->Equation. The Equation Editor is opened by selecting Insert->Objects->Objects->Microsoft Equation Editor 3.0.
This bug is for the Equation Editor. It is still present in Office 2007 in 1.1.14.
Sorry, I didn't realize they were distinct. It's a sort-of workaround for Office 2007 then.
Regardless, I second this being a dup of bug 15211, since the equation editor is not the only thing that doesn't work - none of the OLE objects work (Charts, etc).