Comment 2 for bug 1387801

Thanks for reporting this.

I was able to reproduce this issue based on the attached save game and your instructions in r7240. I got the attached backtrace on Ubuntu.

I guess the problem is that the ship is still trying to unload its cargo, but the wares have no where to go anymore. (I wonder whether this can potentially also be triggered if you destroy the target port while the ship is unloading when doing normal ware transportation.)