Well, of course I was in the middle of importing a transport request, and my system crashed. never failed. Well, it gave me the chance to find this latest tidbit that I can pass onto you.
If you have a hanging transport, go into STMS, find the transport, then using the menu GOTO->Import Monitor.
You should see some folders, and on them will have a truck with some text. Go to that, right click and select delete.
magically, you can begin reimporting your transport. I hope that things still come in cleanly.
thanks for reading,