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

<t>HELP help HELP !!!!!!<br/>
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Hi Experts,<br/>
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I am in a trouble.<br/>
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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<br/>
and if I try last 2 options either it removes ...