cvs init: cannot exec ci: No such file or directory

[Jim TheVoice]

I use CVS 1.9 on a Sun e450 with Solaris 8 and when I use this command, I
got an error...
  # CVSROOT=/src/cvs
  # export CVSROOT
  # cvs -d $CVSROOT init
  cvs init: cannot exec ci: No such file or directory
  cvs [init aborted]: failed to check in /src/cvs/CVSROOT/loginfo
What I'm doing wrong?  I follow the doc but it stil not working... I need
some help or hints please!!!

Jimmy