Pavelll73, I hope you solved your problem - it can be very frustrating as I recently found out when installing AC9 (I wanted to use the
GDL Toolbox which won't work on newer versions). I don't know if you had the same problem I did, but here goes:
AC9
needs an old version of Java but that's another story.
On my system, I had a version of Java that hadn't installed properly for some reason. Uninstallation repeatedly failed halfway and I was soon pulling my hair out. To cut a very long story short, I had to reinstall the "bad" version of Java before I could remove it. Only then was I able to load ArchiCAD using the Java supplied on the installation disk. If you ever need an older version of Java, go to:
http://java.sun.com/products/archive/
Angus, after I installed Java 1.4x for AC9, I installed 2 more versions of Java for AC10 & AC12 respectively without removing the previous ones and had no trouble. The problem didn't lie in having multiple versions (although I usually remove older ones) but in one bad install.
Hope this helps someone.