I've replicated the problem also now with both JRE 6 and JRE 7. I've reported the bug to Oracle and will let you know if their feedback indicates that any change in use of Java is needed.

Hi Emmanuel - Just to be clear, the current issue with the crash is with the version from SourceForge.net - version 3.5.

<r>Well, I may have spoken too soon. I now get a JRE crash, as well as some messages about other plugins being invalid. This is all while trying to follow the "sloping ceiling" tutorial. The crash happens while attempting step 8 on page 8 of the tutorial Furniture->import furniture . I can replicate ...

Thanks Emmanuel, using the latest version solves the problem. Maybe someone could update the version in the Ubuntu repository. That will help other newcomers. Many thanks for the excellent software!

It's version 2.6, which is the version that installs from the Ubuntu Software Center

<t>When starting up sweethome3d on Ubuntu Linux, with several of the plugins, I'm getting the message <br/>
<br/>
Invalid plug-in jar:file:/home/apease/.eteks/sweethome3d/plugins/CopyAsNewFurniture.sh3p!/com%2Feteks%2Fsweethome3d%2Fplugin%2Fcopyasnewfurniture%2FApplicationPlugin.properties:<br/>
Not ...