Type 'dep' not known in line 1 of ross-latest.list
I installod ROS Hydro and am trying to get it working. None of the commands seem to work . I started to reinstall ROS and when I got to sudo apt-get update (to get the latest Debian stuff)I get this message E: Type 'dep' is not known on line 1 in source list /etc/apt/sources.list.d/ross-latest.list followed by: E: The list of sources could not be read. I did not get these messages on the initial install (or didn't see them). How do I fix this? It seems to be what's keeping ROS from working.
Clarification: one file is named ros-latest.list and starts with dep and the other ross-latest.list which starts with deb.