archicad 11 and 12

[Anonymous]

hi, I'm trying to install archicad 12 or 11 at my computer.I have windows vista ultimate and a RAM of 2G, but when I try the installing I always get the message:
java.lang.NoClassDefFoundError:run Exception in thread 'main'
what can I do for installing properly the program.

[Karl Ottenstein]

See if this helps:
http://www.archicadwiki.com/Windows%20Vista

refers to older versions, but you may need to uninstall Java and reinstall the Java that is on the distribution media.

Might be something here, too:
http://www.archicadwiki.com/ArchiCAD%2012%20Install%20Problems?highlight=%28java%29

Karl