LDAPException resultCode=49 (invalid credentials)

[Rod Widdowson]

In the beta the installer logs to stdio at debug you should find it instructive to look at that closely.

>             log.debug("No relying-party.xml file detetected.  Inferring a clean install");
....
>             log.debug("Detected a new Install.  Creating secrets.properties.");

If you are running from a snapshot which is more recent that the beta you should edit install-log.xml in the bin directory.