Problem running natively on Pluto with FW v0.37

[DeonMarais64]

Hi,
Running natively worked without a problem on FW v0.35 but no longer works on FW v0.37 and I suspect, neither will it on FW v0.36 as the changes between v0.36 and v0.37 look like a bug fix and minor enhancements that look unlikely to me to be of relavence.

# pwd
/tmp
# ls -l
total 1012
drwxr-xr-x    2 100      101             40 Jan  1 00:00 avahi-autoipd
drwxr-xr-x    2 root     root            60 Jan  1 00:00 dbus
-rw-------    1 root     root          1822 Jan  1 00:05 linux
-rw-r--r--    1 root     root         27446 Jan  1 00:19 messages
-rw-r--r--    1 root     root            24 Jan  1 00:02 resolv.conf
-rwxr-xr-x    1 root     root        995032 Jan  1 00:04 retrogram-plutosdr.arm
-rw-r--r--    1 root     root            44 Jan  1 00:00 udhcpd.leases
# ./retrogram-plutosdr.arm --rate 61e6 --bw 56e6 --gain 73 --freq 935e6 --step 5e6
-sh: ./retrogram-plutosdr.arm: not found

sh reports the application cannot be found, even though it is clearly there. Any idea as to why this may be ?