I have 64-bit Excel 2013 on Windows 8.1 64-bit. In the past I have written and recorded macros and accessed them through both the ribbon and Quick Access toolbar. Most of them still work but a couple weeks ago some of them are causing Excel to hang, i.e., 'Excel not responding'. I also cannot open the VB editor without the same thing happening. Finally, I cannot record a new macro without the same result. All other Excel functionality is good.

I have tried reinstalling Office but it didn't help. I also tried calling Microsoft and was told that they could open a ticket...for $500. I thought I'd try here instead to see if anyone has an idea - thx.