optistruct stops with no warnings or errors What next? - SOLVED

I've set up my model in Hyperworks 2022, used Validate->Model to remove all warnings and errors.

On running I get only this in the .out file (how do I find the error?) 

 ************************************************************************
 **                                                                    **
 **                                                                    **
 **                     Altair OptiStruct(TM) 2022                     **
 **                                                                    **
 **             Advanced Engineering Analysis, Design and              **
 **        Optimization Software from Altair Engineering, Inc.         **
 **                                                                    **
 **   OptiStruct includes an enhanced proprietary version of NASTRAN   **
 **                                                                    **
 **                                                                    **
 **                Windows 10  (Build 9200)  RL-4015628                **
 **         12 CPU:  Intel(R) Core(TM) i9-8950HK CPU @ 2.90GHz         **
 **                    52131 MB RAM,  75096 MB swap                    **
 **                                                                    **
 ** Build: 1110680uwn33220_Ce64RB68UH14M:201153-000  46004004000000014 **
 ************************************************************************
 **  COPYRIGHT (C) 1996-2022                 Altair Engineering, Inc.  **
 ** All Rights Reserved.  Copyright notice does not imply publication. **
 **         Contains trade secrets of Altair Engineering, Inc.         **
 ** Decompilation or disassembly of this software strictly prohibited. **
 ************************************************************************
 
  
 *** OptiStruct defaults set from:
   install config file: C:/Program Files/Altair/2022/hwsolvers/optistruct.cfg.
  
  
 NOTE # 9199
 MSGLMT=STRICT is active, all messages will be printed.
 You can suppress some less important warning messages by use of
  MSGLMT=BRIEF or UNREF (in config file or in the input data).