asterisk users - Mar 2005 - Warning Message with voicemail CVS 3-3-05

I just updated our asterisk zaptel libpri to the cvs 3-3-05 8:07am and now
after leaving a voicemail we are getting the following in our logs  :

Mar  3 10:50:25 WARNING[4408]: Can't change device '**Unknown**'
with no
technology!
Mar  3 10:50:25 WARNING[4409]: Can't change device '**Unknown**'
with no
technology!
Mar  3 10:50:25 WARNING[4410]: Can't change device '**Unknown**'
with no
technology!

No other changes to configuration were made for the update

any ideas?

Regards
Greg