France
Joined: Nov 7, 2005
Post Count: 9388
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Re: Lost file
Do you mean you exported it to HTML5? If it's the case, you can recover it (except a few things like dimensions and polylines not visible in th 3D view) by changing the extension of the .zip file contained in the exported ZIP file by .sh3d.
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Emmanuel Puybaret, Sweet Home 3D developer