Error while installing EP 6.0

Hi

I just completed installing Web AS 6.40 (not the sneak preview)(OS Win 2003 server and DB is Oracle 9i)

Now trying to install the Portal 6.0 but as soon as I start the installion for the portal I get following error message in a dialog box

Administrator@company: Input error

Analyzer found the following mismatches

Pre-Installation/J2EE/Login Info check logging information

Exception while trying to get InitialContext

Your help is appreciated

Thank you

Regards

Luke