Deinstalling 7Zip, installing WinRAR, deactivating Avira AntiVir doesn't change anything... I'll use the other computer!
Thank you nevertheless!

<t>I tried it several times and on different PCs. (Another PC running Windows 7 created the same problem.)<br/>
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At first I saved a plan containing only walls, closed the program and opened the file again.<br/>
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As soon as I add to this same plan or a door or a window or a piece of ...

<t>Hello,<br/>
first of all thanks a lot for this great and powerful program!<br/>
<br/>
I have a problem, opening saved files on a PC running Windows 7.<br/>
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If the "*.sh3d" contains only walls and rooms, there is no problem.<br/>
If it contains windows or doors, the file can't be opened. The ...