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Hello: I am running a model using Perl Speaks Nonmem which runs ok and has good shrinkage. However, when I run the command with (-CWRES) I get the following error. AN ERROR WAS FOUND IN THE CONTROL STATEMENTS. 300 VERBATIM "LAST MUST BE AFTER LAST ABBREVIATED CODE I searched the archives but couldn't find an answer. I have my error block code listed. My suspicion is that may be where the problem may exist since the model does run ok. $ERROR IF(CMT.EQ.3) IPRED=A(3)/S3 W=SQRT((THETA(13)*F)**2+THETA(14)**2); equation var 2 proost1 CP=IPRED IRES=DV-IPRED IWRES=IRES/W Y=CP +CP*ERR(1)*W + ERR(2)