AOS is getting crashed while clinging on import button

Dear All,

I was trying to import a XPO. But while clicking on the import button from the Project window or from the AOT window, the AOS is getting terminated automatically. And there is no event log for the same.

Only System log identified : The Dynamics AX Object Server 5.0$01-VAL service terminated unexpectedly.  It has done this 11 time(s).

Please anyone can help me on this?

Thanks and Regards,

Sagar B R