So, i unloaded my container into the Large Crusher, Using the trailer management and when it was done, i got the "Saving..." bug. I had items inside the container. I tried switching it with a Tipper, but still got the bug. Then i emptied the Container for all items and then "unloaded" it into the Large Crusher. No bug.. The Container HAS to be Empty before you attempt to swich it, or unload it alone into the Large Crusher.