problems starting mpd

[Paul Hamilton]

Hi,
 
I had mpd running fine, then for some reason it now refuses to start
properly.  I now get this in my mpd.log:-
 
Dec  7 07:29:36 abc1 mpd: [pptp] ppp node is "mpd68948-pptp" 
Dec  7 07:29:36 abc1 mpd: [pptp] can't connect iface and inet: File exists 
Dec  7 07:29:36 abc1 mpd: [pptp] netgraph initialization failed 
Dec  7 07:29:36 abc1 mpd: mpd: no bundles defined 
Dec  7 07:29:36 abc1 last message repeated 17 times
 
The key statement I think is:  can't connect iface and inet: File exists 

What file is this refering too?  When I stop mpd, the mpd.pid is removed.
 
Google shows up a Portuguese thread, but running them threw Babelfish didn't
show up much.  
 
FreeBSD mailing lists didn't show much either
 
my mpd.conf file:-
------------------------------------------------------
default:
        load pptp1
 
pptp1:
        new -i ng0 pptp pptp
        set iface disable on-demand
        set iface enable proxy-arp
        set iface idle 1800
        set bundle enable multilink
        set link yes acfcomp protocomp
        set link no pap chap
        set link enable chap
        set link keep-alive 10 60
        set link mtu 1460
        set ipcp yes vjcomp
        set ipcp ranges 192.168.0.10/24 192.168.0.65/24
        set ipcp dns 192.168.1.3
        set ipcp nbns 192.168.1.4
        log -phys -lcp -ccp -console -fsm -radius -ipcp -link -iface
 
        set bundle enable compression
        set ccp yes mppc
        set ccp yes mpp-e40
        set ccp yes mpp-e128
        set ccp yes mpp-stateless.
------------------------------------------------------
 
Any ideas?
 
Cheers,
 
Paul Hamilton