First, thank you all for the replies! When I installed 2016, I chose to leave the real tracks and real drums on the external drive, and only install the program files on my internal drive. When I went through the install, I pointed the preferences for RT and RD to the external drive. When I opened Real Band yesterday and loaded the project, I got a popup asking me if I wanted to change the path to real tracks and real drums to the external drive, so for some reason when I installed the path was not set. I clicked on yes change the path, and now all is well. Go figure. Thanks again for the help, wonderful forum!