I am using GWNBR Macro, I get the following error. Does anyone know what the reason could be?    939 %gwnbr(data=mydata,y=acc,x=length,lat=yc,long=xc,h= 939! 59.899665,gwr=global,method=fixed,geocod=op,out=gwr); NOTE: IML Ready ERROR: Invocation of unresolved module QNTL. statement : CALL at line 939 column 1 ERROR: (execution) Matrix has not been set to a value. operation : [ at line 939 column 1 operands : qntl, *LIT1306, qntl 0 row 0 col (type ?, size 0) *LIT1306 1 row 1 col (numeric) 3 statement : ASSIGN at line 939 column 1 ERROR: Matrix qntl has not been set to a value. statement : PRINT at line 939 column 1 ERROR: Invocation of unresolved module QNTL. statement : CALL at line 939 column 1 ERROR: (execution) Matrix has not been set to a value. operation : [ at line 939 column 1 operands : qntls, *LIT1314, qntls 0 row 0 col (type ?, size 0) *LIT1314 1 row 1 col (numeric) 3 statement : ASSIGN at line 939 column 1 ERROR: Matrix qntls has not been set to a value. statement : PRINT at line 939 column 1 NOTE: The data set WORK._PARAMETERS_ has 8 observations and 11 variables. NOTE: Exiting IML. NOTE: The data set WORK._RES_ has 8 observations and 7 variables. NOTE: The data set WORK._STAT_ has 1 observations and 10 variables. NOTE: The data set WORK._BETA_ has 16 observations and 8 variables. NOTE: The data set WORK._ALPHA_ has 8 observations and 11 variables. NOTE: The data set WORK._SIG_PARAMETERS2_ has 8 observations and 2 variables. NOTE: The SAS System stopped processing this step because of errors. NOTE: PROCEDURE IML used (Total process time): real time 1.74 seconds cpu time 0.07 seconds ... View more