Just create the file SweetHome3D.l4j.ini in the same folder as SweetHome3D.exe
Hoping that I had understood you correctly, I created a new text file (as shown below), renamed it as:"SweetHome3D.l4j.ini", opened it (with r/click > Edit ) and inserted the single line:-
"-Dcom.eteks.sweethome3d.singleInstance=false"
then saved it and moved it into the folder containing: "SweetHome3D.exe"
Having done that, I can, indeed, now open two instances of the program simultaneously!
Thank you so much for your help (and for your excellent program!).
Best Regards.
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There can be only one! 😊
