Yes, there was a conflict because the game name had not been updated. I have now issued an emergency update to Adventuron so that game saves are also unique per url, if a uuid is not provided. This should make sure that if any games have conflicting names that their save files cannot overwrite each other. Make sure that you check that the version of Adventuron you are using is at least 1.0.0 beta 3b (click the menu button to see the version number).
If you see a version less than 1.0.0 beta 3b, then press CONTROL + F5 to reload Adventuron.