I get this error spammed every increment now (holding down Escape seems to get rid of the messages (eventually), if that helps anyone). I think it may have something to do with all of the civilian ships (KHAAAAAAN!) and their orders bugging out. There are somewhere in the neighborhood of FAR TOO MANY (at least 20-30) doing runs from Earth to Luna (colonists, infrastructure, and misc trade goods, if it matters, which I highly doubt), on 30 day increments (I only find out after that I should really be doing 5 day increments for them).
If the image breaks, here is a transcript of the error message:
Error in ExecuteOrders
Error 5 was generated by Aurora
Invalid procedure call or argument
Please report to (link)
And here is a spaced out direct link to the image on Imgur:
http : / / imgur . com / WWqT23u
I have yet to run into this problem in my newer game, but I have yet to invest so heavily into civilian shipping, either.
Unrelated note: I just joined to post this error report. Is the verification always "What is the fourth planet?" and what will happen if I put in "(politician name removed)'s ego"?