Problems with size optimization

Hello!

I ty to do optimization of composite structure from one of Optistruct tutorials, so at the stage of size optimization I have some difficulties:

 

*** ERROR # 1481 *** in the input data:

 Control card without the name in the first field.

  (Possibly missing trailing comma in the preceding card,

   missing BEGIN BULK card or line before BEGIN BULK has trailing comma.)

 

If I remove control card OMIT, appears next message:

 


*** ERROR #  622 ***

 PLY     91100 does not contain any valid plate elements referencing a

 PCOMPP card.

 

File with model is attached here:


 

I've just begun learning HyperWorks, so could you help me?

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