What Happened to Tracy Morgan?

That was the question on everyone’s mind Monday morning at the Sundance Film Festival after hearing the 30 Rock star had collapsed at the festival Sunday evening. He was in town promoting the ensemble comedy Predisposed, but ended up at the hospital. People immediately began speculating that substance abuse was to blame—a rumor that was quickly debunked by a hospital spokesman, who said no alcohol or drugs were found in his system. Two years ago, Morgan had a kidney transplant and is a diabetic. Turns out it was the altitude.

“I just got off the phone with him,” said Predisposed codirector Ron Nyswaner Monday afternoon. “He said, ‘I’m A1 Steak Sauce.’ That means he’s fine.”