I copied the file "gpsapp" to the location that was already there using derrick's version of the file, tagged it as executable, and here's what happens when I try to run it:

gpsapp(11): memory violation at pc=0x400a0ae8, lr=0x00000006 (bad address=0x0000
0000, code 0)
pc : [<400a0ae8>] lr : [<00000006>]
sp : bffffc00 ip : 00000000 fp : bffffc0c
r10: 00000000 r9 : 0200b090 r8 : 00000000
r7 : bffffc61 r6 : 0201389c r5 : 00000018 r4 : 020138a4
r3 : 00000064 r2 : 00000018 r1 : bffffc63 r0 : 00000000
Flags: nzCv IRQs on FIQs on Mode USER_32 Segment user
Control: D020517D Table: D020517D DAC: 00000015
Function entered at [<400a0ac4>] from [<0200aa74>]
Function entered at [<0200a9a0>] from [<02001918>]
r10 = 4012C128 r9 = 02001AA4 r8 = 0200AF10 r7 = BFFFFEE4
r6 = 00000004 r5 = BFFFFC50 r4 = BFFFFC4C
Function entered at [<020018a0>] from [<02001b00>]
r6 = 00000000 r5 = 00000001 r4 = BFFFFE00
Function entered at [<02001aa4>] from [<40064040>]
r10 = 4012C128 r9 = 02001AA4 r8 = 0200AF10 r7 = 02000C04
r6 = 4000C2A8 r5 = 00000001 r4 = BFFFFEE4
Function entered at [<40063ee4>] from [<02001000>]
r10 = 4001D858 r9 = 00000000 r8 = 00000000 r7 = 00000000
r6 = 02000FDC r5 = 00000000 r4 = 4001E5EC
hijack_exec("/drive0/var/gpsapp/gpsapp"), rc=0 (okay)
hijack_exec("/drive0/var/empacman/empacman"), rc=0 (okay)
empacman running as pid 13

What have I done wrong?