In the mean time problem solved. I used the link "Windows 10". That did not work. But I overlooked the option to use the link for users that have Java > 5. Now it works. And I can access the files I made.
However, upon starting the program asks approval to contact the sweet home webside. And that ...

I worked with previous version. Have files on the computer.
I followed the suggestion to upgrade to 5.5. But this does not work. Cannot open, get error messages (183)
On line I cannot open de existing files. What to do with all my work?
I have removed the program also and reinstalled. But this does ...