Kragnost
I attempted to do some GPI's on a planet with a platform and got the following result:

>TU 10: GPI Row {0} {19} {1} {20}
GPI aborted.You lacked TU's to perform this action.

With only 10 tus remaining at the time the platform didn't have time to do any GPI orders but rather than the turn stopping and GPI's being done as tus became available the platform moved on to the next order and was left with no pending orders.