In case it might help someone, I've finally found the solution. First I had to delete all previous versions of java and sweet home 3D. Then I downloaded the latest version of sweet home 3D. During the installation process, that time the link to java 6 was efficient and I could download and finally ...

Hi
Am I the only one being in serious trouble since upgrading to Yosemite ?
I can not go back to Java 6, as it is no longer supported, I simply can't download it. The link leads to a blank page.
So I downloaded the oracle version and tried to java web start version. The oracle version is installed ...