Look like the issue is with my home network. I tried downloading the file with my office network and it works fine now. Strange !!!!

HELP help HELP !!!!!!

Hi Experts,

I am in a trouble.

sh3d file downloaded from sweethome3d online shows as damaged while trying to open in desktop app. Its shows 3 options - Don't open ...., Replace ...., Remove
and if I try last 2 options either it removes some parts or opens with red colour ...