This will have to be brief - I've got what feels like a mild case of food poisoning.
"Mild." Ha. Like there's a gentle, sunny, zephyr-like version. It's better than severe food poisoning, but several orders of magnitude more sucky than my preferred alternative, which is not having food poisoning.
Fortunately, the symptoms didn't kick in until well after I finished writing last night. Last night's total: About 6 1/2 pages of the screenplay.
Given that I don't know whether I'll be up to doing any writing tonight, it would be premature to say that I'm back on track. I'm going to see what the day brings.