Thank you very much, hal9000.
I did not know ComboFix. I'll try. [;)]

Yesterday I tried the fourth option (SweetHome3D.l4j.ini). But no such luck.
SweetHome still not working. [:-s]

I do not know if this information is important. Watching the Task Manager while SweetHome starts, Memory Usage never exceeds 14Kb. Before reaching these Kb, SweetHome disappears.