In 1153, and again in 1217, the abbey was consumed by fire. In the 14th and 15th centuries it declined so completely that at the accession of Abbot Johann Schedler (1416–43) only six or eight monks were left, and its annual revenues did not exceed 46 silver marks. Under Abbot Leonard Wiedemann (1508–46) it again began to flourish: he erected a printing establishment and a common house of studies for the Swabian Benedictines. The latter, however, was soon closed, owing to the ravages of the Thirty Years' War.