When I launch Sweet Home 3D with Java Web Start, I cancel the message
[font=century gothic]"An association already exists with the extension .sh3d.
Do you want to replace it?
The association is currently used by C:\Program Files\Sweet Home 3D\SweetHome3D.exe"[/font] .

After closing the Java Web Start version, if I double-click on the Sweet Home 3D desktop icon I have this error message
[font=century gothic]"Impossible to launch the application.
Name: Sweet Home 3D
Publisher:
Location: http://www.sweethome3d.com"[/font] .

In the Start menu, the eTeks Sweet Home 3D folder contains 2 files named Sweet Home 3D.
The first launches the installer version and the second displays the above error message.

To reuse the desktop shortcut normally I need to reinstall SweetHome3D-5.7-windows.exe.

After that, impossible to laucnh the beta version 6.0 even if the name of the desktop icon or file in the Start menu is different (Sweet Home 3D 6.0 Beta).
I get the same error message as before with the name of the beta version.