I recently placed the spawner I got from the donor25 package, and it gives me a permission error when I try to change the spawner to a skeleton mob type. "Error: You don't have permission to spawn this mob." Are skeletons not allowed? If not, is there a current list of allowable mobs?
From my knowledge, the $25 rank can change spawners to certain mobs- all passive mobs (may not include horses or bunnies, not completely positive), and limited hostile mobs. However, regardless to what you can or cant change a spawner to, you can always ask a higher level donor or mod to change your spawner if you are unable to. Most of the time, anyone who can change your spawner to the desired mob will.