Problem to save Word object in Mathcad 15

I am looking for solution how to fix this issue. I use Mathcad 15 to produce the documents in it. As front page in this document there is embedded Word document. Recently I lose this front page very often. In this situation when I open Mathcad document I always get an error message. I have noticed the first page is saved but it can not be open for some reason (I recognize it for Mathcad file size).

I had this issue for long time but some time ago I found the solution for it. After opening Word in Mathcad I went to File menu and I did inspection of document and after finding some unneeded marks or other object and after removing them I could always open Mathcad document without loosing the first page.

But situation has recently worsen after Microsoft has updated their Office applications and I now the most time I lose the first page I can not do anything with it.

Has anyone heard about this issue and maybe someone knows the solution for it?

I will appreciate for any help.