For the past day, I have been stuck trying to complete the tutorial. Specifically, the part where you are supposed to buy and sell 100 e-cells. From the looks of it, people are stuck at all parts. I finally got by this mission today, here is how.
1) Freighter not buying E-Cells? Taking the side mission seems like it overrides your buy order. So you may want to wait for the freighter to complete his mission of buying the e-cells before taking the other one.
2) Freighter bought the goods, but won't deliver them? This one took a while for me, I went to the destination system and waited. I watched the freighter via map using the SM option in Property Info. He slowly made his way to me. Once he arrived, I made the sell order.
3) Freighter at destination but won't sell? Have too many trips planned? This solution work for other issues as well.
- Open your saved game (back it up first) file at ' My Documents/egosoft/x rebirth/<number>/save
- Search it for '<shopping>'
- Remove all entries inside of the shopping tag
- Save file, start up X Rebirth and reissue the sell order