I have linked Fortran with ABAQUS and it had been working perfectly.
But now with unknown reason it is not working properly. I mean when I try to use a Fortran subroutine (the same that was working perfectly before) it doesn't work properly and gives the wrong results. I had used this subroutine before and everything was perfect.
I have not changed anything in programming and Softwares.
I don't know what is the problem. 
The only thing that come to my mind was checking the Abaqus Verification in command prompt. This time I didn't see the message " .... PASS " as before. Now the message is " Products are not Licensed", as bellow:
Do you think this message is related to my problems with subroutines?!
Do anyone knows what is the problem?