more robust error checking for media requests
more robust error checking for media requests

ARISGames/server,tl-its-umich-edu/ARISGames-server,ARISGames/server,tl-its-umich-edu/ARISGames-server,tl-its-umich-edu/ARISGames-server,ARISGames/server,ARISGames/server,tl-its-umich-edu/ARISGames-server