The Installation Logfiles just say:
An internal operation has failed: The oracle instance is not empty. Select a different location or remove the instance at this location.
. . .
Caused by: oracle.as.config.exception.LocationAlreadyUsedException: The oracle instance is not empty. Select a different location or remove the instance at this location.
???? That's a fresh new Installation, how the Instance can not be empty?????
So, now I'm trying with Oracle Metalink to solve this problem, let's hope ....
This blog entry will be continued, depending on the performance of Metalink :-)