Problem in Installation

Actually i have installed hypermesh the Error it was coming is Optistruct is not installed.

I have reinstalled the Software's 15 times again and again i was trying  the same error is coming,But the same software of my friend is  using in his laptop  it is not getting any errors.

Please guide me or suggest me how to solve the problem

And even i tried for Student version In the student version i can able to find the Hyperworks it showing pbs professional software.

Kindly help me clear this error

<?xml version="1.0" encoding="UTF-8"?>