The council often could not meet when they wanted to, and sometimes could not meet at all, because of resistance from the popes and revolt against the emperor.Charles V, Holy Roman Emperor wanted the council to meet, and Pope Paul III summoned the council in 1537, but the plans fell through. In 1538, ideas for a council again failed. The pope asked for the council to meet in 1542, but it did not actually meet until 1545. The council was not active between 1547 and 1551. It again met from 1551 to 1552, when it was suspended due to a revolt against the emperor. Pope Paul IV (1555-59) strongly disliked Protestant ideas and the council could not start again until his succesor took office. The council met for the last time from 1562-63.