I am using Microsoft equation 3.0 and Endnot X5 in my thesis. Once I start to enter an equation, word suddenly stops responding, a dialog box appear (it indicate heading as Endnot X5) and says this command is not available. I can not do anything with word after that. That dialog box never disappear when I press "ok" button in it or even I try to close it. I have to restart word every time. Would you please give me an answer for this problem.