In IE7 once I've added a page and want to select a layout, clicking on a layout image produces no results. IE7 again loads the page as Done with Errors and the details message says "Line 85, Char 5, Error- Object doesn't support this property."
We have updated our install to 9.1. I guess the ideal answer would be to get my public library to install FF on our machines (I wish.)
PS I love Zotero!