I was trying to create a plug-in and followed the tutorial http://www.sweethome3d.com/pluginDeveloperGuide.jsp

I was getting an error with the plug-in I was trying to create so I downloaded this plug-in http://sourceforge.net/tracker/?func=de ... id=1127349 since it is for sure working and got the same error.

The error is:

Invalid plug-in jar:file:/C:/Users/username/Application%20Data/eTeks/Sweet%20Home%203D/plugins/RotateHomePlugin.jar!/org%2Faddy%2Fsh3d%2Fplugin%2FApplicationPlugin.properties:
org.addy.sh3d.plugin.RotateHomePlugin not a subclass of com.eteks.sweethome3d.plugin.Plugin

Invalid plug-in jar:file:/C:/Users/username/Application%20Data/eTeks/Sweet%20Home%203D/plugins/CopyStylePlugin.jar!/newPlugin%2FApplicationPlugin.properties:
newPlugin.CopyStyleAction not a subclass of com.eteks.sweethome3d.plugin.Plugin

I don't understand what could be wrong, although it might be something stupid, any ideas?

It's the first time I'm trying to develop a plug-in so it could be something easy I didn't notice.

If any part of the code is needed (or any other information) I can post it, but right now I only have a message box to appear in the execute and nothing more, everything else is according to the tutorial.