<t>I managed to recreate the problem, as you say it was not the .mtl file, it was caused by a parameter in the .properties file. The furniture could be used in the plan, but an error occurred when selecting "save". To solve the problem I deleted all instances of the imported furniture, corrected the ...

<t>Hi,<br/>
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I have been using Sweet Home 3D successfully for a while without any errors when it failed to save the model. The automatic saves every 10 minutes had failed as well, so I know roughly when the problem started.<br/>
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The error I got was<br/>
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Can't save home in:<br ...