[molpro-user] ERROR IN OPTVAR_VALUE: VARIABLE ECBS NOT FOUND

[pauli]

Hi Molpro-Users, I study  the" BASIS SET EXTRAPOLATION" for the first time.when I run the input as follows,the process can't recognize the "ecbs".***,ch3clmemory,384,m;
!file,2,ch3ccl-single_point-test.wfu
basis=avtz;
rccl=1.8;
rch=1.1;
alpha=108.8;
geometry={Z;
          ang;
          c,
          Cl,c,rccl;
          h1,c,rch,Cl,alpha;
          h2,c,rch,Cl,alpha,h1,120;
          h3,c,rch,Cl,alpha,h2,120;}

proc cbs34
{hf;wf,26,1,0;}
{ccsd(t);}
extrapolate,basis=avtz:avqz
endproc
optg,variable=ecbs,proc=cbs34
freq,variable=ecbs,proc=cbs34


And the error message:
ERROR IN OPTVAR_VALUE: VARIABLE ECBS NOT FOUND


My version is 08.And the corresponding manual seems not introduce the following message.Any suggestion will be appreciated.
Cheers,
-tao

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.molpro.net/pipermail/molpro-user/attachments/20121026/6e70fe4d/attachment.html>