SharePoint Designer 2013 Crashing on Open Site: The Fix

The Problem My Office365 tenant has become half-upgraded from SharePoint 2010 to SharePoint 2013. (If you want to read more of my whinging about this, checkout this thread on SPYam.) This leaves me in the unenviable position of having to use SharePoint Designer 2013 (SPD2013) with my SharePoint 2010 Office 365 tenant. Unenviable because, as…