Hello Rick,

I tried to caculate MLEs for data generated from two-parameter Weibull distribution iside do loop using call nlptr(rc,xres,"f_weib2",x0,optn,con,,,,"g_weib2"); and also keep one of the MLEs in a matrix.
The program could not be run and I got the following warnings and erreor messages:
WARNING: Starting a module while inside a DO group.
WARNING: Finishing a module while inside a DO group.
ERROR: DO expression not given value.
ERROR: Execution error as noted previously. (rc=1052)
What should I do to solve this problem? Your help is much appreciated.

Best Regards,
Amany