Hello community,
I am currently using the CASTEP code embedding in Materials Studio 2017.

I run the Photon properties, after finishing, I face with the problem.

forrtl: severe (157): Program Exception - access violation
Image PC Routine Line Source  
castepexe.exe 00000001413CBE30 Unknown Unknown Unknown
castepexe.exe 00000001413C9AF8 Unknown Unknown Unknown
castepexe.exe 00000001414FD661 Unknown Unknown Unknown
castepexe.exe 00000001414FA805 Unknown Unknown Unknown
castepexe.exe 00000001400047AE Unknown Unknown Unknown
castepexe.exe 0000000144A4F3D6 Unknown Unknown Unknown
castepexe.exe 0000000142D774DB Unknown Unknown Unknown
KERNEL32.DLL 00007FF925667034 Unknown Unknown Unknown
ntdll.dll 00007FF926AA2651 Unknown Unknown Unknown.

However, I still achieve the result. I wonder that the result is reablie or not and how to solve the problem.

Thank you very much for your time and I appriciate any suggestions for this problem.