Good advice on the backups, I do it that way as well . Well, all sessions were originally created using Start > Routes > Sessions > Create (or Edit) Session. Now, when you want to make modifications to the route, and still have one on DLS that you can play,you need to Create a new version. This starts the version control . That is done in Content creator and it appends the :1 :2 :3 ,etc to the version. This stops you from having to upload many different assets that are just modified copies of say a route or a session. I did it without having created new versions, and the amount of files that end up on DLS is too many. Now with version control (done in CC) , you just send it to DLS and it overwrites the older asset , and it keeps your asset count down . This was all working fine up until I got :15 the 15th version upgraded to :16 and then , wham , no name shows up when I launch game and look under routes. All very confusing ,etc... I can delete the :16 version , and go back to the version :15 that is on DLS and still play online and the single player games as well but I can't go up to version :16 and make any more modifications to the route .