I downloaded V4 and can't get it to run after installation. I didn't have that problem with V3.7. I have reinstalled V3.7 to conform that it runs on my computer and it still does.

I swapped over the Sweethome3d Jar file from the 3.7 lib folder to the
V4 lib folder. It ran from the v4 folder, and the splash screen came up with v..3.7. It seems to me that something is wrong in the v4 Sweethome 3d jar file? [:(]