*** ERROR # 583 *** AND *** ERROR # 1004 *** - COMPOSITE OPTIMIZATION

Dear All,

I kndly ask You if you have some advices about the following topics. I have to perform composite optimizations for an exam project, but after performing static analyses of composite components (they runs correctly without errors), I am stuck in the "free size optimization" phase. In fact, all the models I tried to run give errors "ERROR # 1004" and "ERROR # 583".

As exemple, in a simple loaded plate that i created as an exercise, if i activate the control card "SCREEN", optistruct gives me thge following message:

If i disable the control card "SCREEN" and I re-launch optistruct, i get the following message:

I followed all the steps described in composite optimization tutorials, creating Design Variables, Optimization responses, constraints and objective, and i don't no where I'm wrong. see image below. 

In another model, after disabling "SCREEN", i get again same "ERROR # 1004"  but related to another variable (see image below)

I'm using Hyperworks 2020.1 Student Edition. As suggested in another post, i tried to save and run the files in another directory but i still get the same errors. 

I attach the hm and .out file of the simple plate mentioned above.

Any advice is very very welcome. I thank You very much for the attention,

Giovanni