This update also changes the bundle names of the Power Menu field entities. Menu names can have hyphens, but this are not allowed for bundle names. An update hook is implemented for that.
Important bugfix when menus used with visibility settings. This does not work correctly prior version 1.6. When in your Project the block visibility settings are not in use, an update is not necessary.
Revert the last change (Version 6.x-1.4): The status of the menu block can not be used in case when an other menu block, as the provided from menu module, is used and the default menu block is not set in a block region (status = 0).