Correction to Division Algebras over p-adic Curves

There are two problems with the paper in the title, which is reference [l]. One is a genuine gap, and one is a difficulty with an argument that was not actually needed. Let me acknowledge this author's deep gratitude to Ofer Gabber for spotting these two problems, and suggesting fixes. Let me also thank J.-L. Colliot-Thelene for his help. We adopt all the terminology and notation of [l].