At our new sharepoint 2013 environment we try to configure FAB authentication by LDAP using this article: http://technet.microsoft.com/en-us/library/ee806890.aspx
I suppose only the steps Phase 1 and Phase 2 are needed.
After making the changes my page is not loading anymore.
We also tried the FBA Configuration Manager, also after Apply the Config to a new clean Sharepoint site the page will not load anymore.
Did anyone figured out how to get LDAP authentication working?