Cannot connect using user=,secret= URL

I am trying to connect to a Centera cluster from Java using a url like this:

centera.domain.com?user=appuser,secret=p4ssw0rd

But I get this error message:

com.filepool.fplibrary.FPLibraryException: Failed to authenticate PEA data

        at com.filepool.fplibrary.FPPool. (Unknown Source)

        ...

I am able to connect using a PEA file, but because PEA files are not encrypted, we are not allowed to use them in production. The video at this URL

https://community.emc.com/docs/DOC-3162

indicates that you can use a user=,secret= URL to connect instead of using a PEA file (at about 25 minutes in, section "Centera Access Profiles").

Is this a problem with the URL, or does some flag need to be set on the account in Centera to allow a connection like this?

Thanks!