STAAD Pro Crashing while Parametric Modeling - Cannot get around the problem

Trying to model a 3 dimensional Plate. Using a basic mesh. Whenever I use the parametric models feature to create a mesh, the program freezes then crashes. Attached I have a photo of the mesh I am trying to create and the error I receive. The gusset plate is a standard mesh and works fin e, but the automatic mesh feature for basic and standard does not work for the bottom plate. Let  me know what I can do. 

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