Thanks for the reply Boyd. The information you provided helped me fix the issue. I first took out the SD card and then tried installing the maps and everything worked fine so the SD card was the problem. It ended up that the card was formatted exfat. I properly formatted it to fat32 using Parted Magic/Gparted and then tried installing the maps again on the card and everything worked great once again. Thanks also for the tip about JavaWa Device Manager. I've installed it and am now using it with the Oregon. P.S. I understand what you are saying about the excessive size of the SD card... it was a spare taken from another device that was not being used.
Thanks again and have a great day!
Thanks again and have a great day!