During the "interregnum", imperial power was exercised by two imperial vicars. Mehmed spent the rest of his reign reorganizing Ottoman state structures disrupted by the interregnum. In the subsequent interregnum Joannes was nominated Emperor. Disputes about the vicarage continued through the Interregnum and Protectorate. The death of Pope Nicholas IV gave rise to a prolonged interregnum. The civil war was followed by a period of time known as the English Interregnum. Hurst ensured continuity during that conductorial interregnum. This period is known as the "Interregnum", a term coined by Professor Wolfgang Horn. The competing claims to the throne resulted in an interregnum in the "beylik". During the Interregnum, however, squatters had occupied Windsor Castle. During the German Interregnum, Salzburg also suffered confusion. Information regarding this "interregnum" period tends to be conflicting. All theatres were closed down by the Puritan government during the Interregnum. All theatres were closed down by the puritan government during the English Interregnum. During the interregnum under Foundation ownership, the team declined.