Tried it now, and Follow Me car works me normally when called from halfway RWY 20. However, you haven't said which parking you selected, so my test is not under the same condition.
And, you said "Couatl crashed". Please, clarify what do you mean: was a sudden crash with no message and the menu just disappearing, or an error message with the indication to check your Couatl.ERR file for error details ? In that case, what's inside the Couatl.err file ?