[Wien] Error while running elastic calculations

[413119008 at nitt.edu]

Respected sir,

            I was running elastic constant calculations in Wien2k 21.1  
using IRelast package. When i run set_elast_pressure, i am getting the  
following error.I am not getting this error for zero pressure. As i  
include pressure gives the following error.Kindly help me to resolve  
this error.


Error: basis can not satisfy the main conditions.
Error: basis can not satisfy the main conditions.
--->  <---
--->                   <---

Error: basis can not satisfy the main conditions.
_set_elast_lapw: Command not found.

with regards

Narayanan P