I recently downloaded forge and a few other mods (API, API render, SPC, dynamic elevators) and opened minecraft, went to singleplayer and tried loading a world. It began loading and got to saving the world for a bit, then started saving chunks and soon after an error report popped up for less than half a second and the screen went black. What should I do? (note: I couldn't get the error report because it didn't stay open long enough for me to copy each time I tried)