If you are using redhat or fedora... do this...
Near the top of that file are 2 entries that say rndc-key or rndckey
remove the "-" from the rndc-key
then run /scripts/fixndc
do that twice... the first time will error out the second time will be fine.
comment out the 'rootdir='
just put a # in front of it..
This will fix all the BIND issues and RNDC issues in WHM and Cpanel so you dont get that rndc error and if you had that annoying popup missing a entry thing, then it will fix it to...