cvs update stopped by missing file or directory

["Thomas Mueller" <mueller6724%bellsouth.net@localhost>]

I tried to update source tree but was stopped by

cvs [update aborted]: cannot open directory /cvsroot/src/external/mit/lua/src: 
No such file or directory

Is something temporarily missing at the server end, or did something get 
screwed at my end?

Update command, from head of source tree, in this case 
/BETA1/netbsd-HEAD/usr/src , was

cvs up -dP -A

Tom