dvbinput module failing

Can anyone explain this?  Everything appears to be ok, until the input
module dvb is destroyed three seconds after being created, and then of
course the next call to it fails.
 
Any ideas?  The version of code is from cvs this morning.
 
I'm still learning the vls code, so I'm completely stumped at the
moment.
 
Graeme
 
Oct 16 11:12:07 debian vls[3439]: [DEBUG/Vls]  In src/core/module.cpp
line 152 -> trying file "/usr/local/lib/videolan/vls/dvbinput.so" 
Oct 16 11:12:07 debian vls[3439]: [INFO/Vls]  Module "input:dvb"
registered 
Oct 16 11:12:07 debian vls[3439]: [DEBUG/Vls]  In src/core/module.cpp
line 152 -> trying file "/usr/local/lib/videolan/vls/dvbreader.so" 
Oct 16 11:12:07 debian vls[3439]: [INFO/Vls]  Module "mpegreader:dvb"
registered 
Oct 16 11:12:07 debian vls[3439]: [DEBUG/Vls]  In netchannel.h line 45
-> New instance of module "channel:network" 
Oct 16 11:12:07 debian vls[3439]: [INFO/Vls]  Channel 'localhost'
created 
Oct 16 11:12:07 debian vls[3439]: [DEBUG/Vls]  In netchannel.h line 45
-> New instance of module "channel:network" 
Oct 16 11:12:07 debian vls[3439]: [INFO/Vls]  Channel 'multicast'
created 
Oct 16 11:12:07 debian vls[3439]: [DEBUG/Vls]  In dvbinput.h line 136 ->
New instance of module "input:dvb" 
Oct 16 11:12:07 debian vls[3439]: [INFO/Vls]  Starting input 'dvb' 
Oct 16 11:12:07 debian vls[3439]: [DEBUG/Vls]  In src/server/input.cpp
line 136 -> Initialising input dvb 
Oct 16 11:12:07 debian vls[3439]: [INFO/dvb]  Sending data to the
Frontend 
Oct 16 11:12:07 debian vls[3439]: [INFO/dvb]  Data successfully sent to
the Frontend  
Very confused here  ====> Oct 16 11:12:10 debian vls[3439]: [DEBUG/Vls]
In src/server/input.cpp line 167 -> Destroying input dvb 
Oct 16 11:12:10 debian vls[3439]: [ERROR/Vls]  Unable to start input
'dvb': Error: dvb: Unable to initialise input: aborting Error: Frontend:
time out: No such file or directory 
Oct 16 11:12:10 debian vls[3439]: [DEBUG/Vls]  In localinput.h line 81
-> New instance of module "input:local"