As I suspected, the problem here was incompatibility between the old theme and WordPress 3.6. I’ve had to change to a new WP3.6-friendly theme, and this is the best I can do on short notice.
I was on my feet for nine hours today, and I’ve already fielded two calls from my post-op patients. I’m anticipating a troublesome night.
In other news, if you’re curious what I’ve been working on lately, check it out. Bear in mind, please, that this is very much a work in progress, and still quite rough (aesthetically rough, that is. I stand by the writing).
D.