I contacted Magellan in regards to this. Because downloading works fine with other OS, and my laptop is Windows 8.1, they recommended I just use friend's computers or go to the library to download caches. Work computer isn't Windows 8, but guess what, I can't get approval to download software.... Thanks Magellan!
We have outgrown the Magellan eXplorist GC, and our next gps will not be by Magellan!!!!