Interrupt key in search screen aborts with error -1141

Throughout our 4GL application we employ a similar construct for searching and then using the interrupt key to exit. This works fine on two different types of machines (one 68020 based, the other 486 based) which are running 4GL revision 4.10. We compiled successfully on a HP with 4GL 4.11, however when attempting to exit from any search screen using the interrupt key, the program aborts with error -1141 (Cannot close window with active INPUT, DISPLAY ARRAY or MENU statement). Would appreciate hearing from anyone who has encountered and resolved this problem by means of a workaround. Li Chuan Dunlop