Thanks for your help. We are able to build the application using the solution you provided us.
Now, For some of the XPS (which we have with us) file rotation fails, it does not gives any error at back-end, just silverlight app crashes out.
We were also able to replicate the issue while we uploaded those error-prone xps on
application. Here as well, the silver-light is getting crashed.
Also, the issue seemed to appear on different zoom level. If say the page rotation works for 'Fit Page', it may crashes out on 100%, or if say it works for '100%' then it fails on '200%' or 'Fit Page'.
We were not able to upload those files here as we were unable to find the file upload option.
Kindly, help us out for this problem.