Thanks so much Andrew; that worked. A bit of backstory: I'd become frustrated by the limited icons available to create QAT buttons, so I found a web site that offered the codes for many other icons (Office Excel Ribbon imageMso icons gallery page 01). It said it was for Word 2016, but it did appear in my Word 2007 QAT, so I thought I was good to go. When I took your advice, I changed the icon to one of the ones on offer in Word, and now the macro runs fine. I guess I should update Word. . . .