It appears you are trying to save the file on top of itself, it probably has to do with running it with active as the preview, -1(-1) i believe is referring to the input being on the same key address therefore you cannot save something over something while that something is running..like trying the edit an mp3 tag while the file is playing..try removing the input then saving.. I move 2 to 1, then just use the basic remove command from a browser and that will not only make active input1, but it will register a new input key as well for input2.. I hope that helps.. you had a very vague description of the actual problem.. are you trying to save or trying to load?.. and are you using an overlay on the same channel as the original recording.. cuz that could return a similar error as well