I'm building a new radius server. I'm copying an existing one. I'm getting the following error from freeRADIUS when I run it -x (FreeRADIUS 1.1.3) Exec-Program: /usr/bin/ntlm_auth --request-nt-key --username=mking --challenge=46b51a98d607a3a9 --nt-response= hex decode of failed! (only got 0 bytes) Of course, if I run it via the command line, it works flawlessly. rad2:/etc/freeradius# ntlm_auth --username=mking password: NT_STATUS_OK: Success (0x0) I've copied the ntlm_auth line from my working radius server (which is on 1.0.1, hence the reason I'm upgrading) ntlm_auth = "/usr/bin/ntlm_auth --request-nt-key --username=%{mschap:User-Name} --challenge=%{mschap:Challenge} --nt-response=%{mschap:NT-Response)" I'm at a loss why I would get 0 bytes..... I've even chgrp freerad /var/run/samba/winbindd_privileged chmod g+rx /var/run/samba/winbindd_privileged Just to be sure (Even thought I didn't have to do that on my old radius server) Help?