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Unrealistic Deformation Plot

​Hi
I got a problem with deisplay of results using Deformation Plot in Patran. Its showing unrealistic deformation. NO problem with quick plot or fringe plot.
Nastran doesn't show any warning or error messages.
When I tried to check the results, I am getting the following msg in command window.
 
" The specified results to a coordinate system which does not exist."
 
Thanks
Prasad