Hi,
I love Sweet Home 3D, but I can't install it on my Mac. (I am using the Java version now). When I download and try to open SweetHome3D-4.2-macosx.dmg I get the following error message.

Image: Sweethome3D-4.-macosx.dmg Reason: no mountable file systems

Disk Utility gives this message:
"No Checksum in formation to verify"

My OS is Mac 10.7.5.

I will gladly make a donation.