By Gregory Bedigian on Dec 15, 2008
If you keep getting the following error on the first screen of the config wizard just after entering the amAdmin and Agent passwords: "Base directory specified :/opensso cannot be used - has preexisting config data., refer to install.log under /opensso for more information."
Try the following to resolve:
1) Stop Tomcat.
2) Remove the /opensso directory, the default configuration directory of OpenSSO where the bootstrap file is created.
3) Remove the /.openssocfg/AMConfig_\* entry which corresponds to your existing installation.
4) Start Tomcat.
5) Attempt to reconfigure OpenSSO.