"Insert new equation" grayed-out in Excel 2010

Hello,

I have a strange problem. I put the "Insert new equation" button on my "Quick Access Toolbar" but it is grayed-out, as in, unavailable. The weird thing is, I also have a "Insert Equation" button on the same toolbar, clicking that opens a small menu of ready stored equations and at the bottom there is another "Insert new equation" button, that is also grayed out. However simply clicking the "Insert Equation" icon puts allows me to insert a new equation, as it should be. The same is true for the "Insert Equation" button in the "Insert" tab.

I am working on a new excel file, i.e. it is a .xlsx file with only one sheet. It worked for me before but I did a windows reinstall and now it doesn't.

Help, please?



Also while on that subject in Word 2010 you can put a "Insert Symbol" button on the "Quick Access Toolbar" which, when clicked, opens a small menu of recently used symbols, while its Excel counterpart directly opens the entire Symbol catalog. Do you know of a way to put a button on the Excel "Quick Access Toolbar" that behaves like its Word 2010 sibling?


Thank you!

Is there no one who can offer me assistance on this matter?

Ow, I see. I had no idea Excel first needed a shape to insert the equation into.

Thanks, both of you! Now my problem is solved.