I am working in VFP 3.0. The app involves three screens, and when I go back and forth between them, I keep getting the following error up. Any ideas as to what is going on & how I can fix it?

VFP caused an invalid page fault in
module KERNEL32.DLL at 014f:bff9a28c.
Registers:
EAX=c00185c8 CS=014f EIP=bff9a28c EFLGS=00010202
EBX=009ffe28 SS=0157 ESP=008ffe80 EBP=0090011c
ECX=00000000 DS=0157 ESI=00000000 FS=473f
EDX=00000000 ES=0157 EDI=0076c570 GS=0000
Bytes at CS:EIP:
53 8b 15 7c c2 fb bf 56 89 4d e4 57 89 4d dc 89
Stack dump: