Thanks for your posting and using Aspose.Cells.
Aspose.Cells display same output as Ms-excel shows in Print Preview. We have tested your file and found one picture and rectangle shape are not displaying. Rest of the output is completely fine. We have attached the generated output file.
We have logged the issue in our database. We will look into it and resolve it. Once the issue is resolved or we have some other update for you, we will let you know asap.
This issue has been logged as CELLSNET-41618.
We have looked your issue further. For your issue, the wmf/emf are picture formats that are created by Microsoft, so, it could be displayed properly in IE but not in other browsers I am afraid.
But, anyhow, we will try to support displaying rectangle shape later on.
Once we have any update on it, we will let you know here.