Secure Passwords

I'm having trouble getting FBA to work if I select StorePasswordInSecureFormat=True

When false - aka plaintext passwords, the self-registration / approval of accounts is working
When true, everything appears to work, apart from when trying to login. The username and password is no longer recognised.

I'm I missing something in my web.config here?
Does the FBA pack support encrypted passwords?

It does work with hashed passwords.  I'd probably check the web.config file to see what's being set in there. Make sure that the passwordFormat parameter is set to "Hashed".  Some more details are here: