Shibboleth authentication with LDAP

I'm running into "Internal Server Error" when trying to authenticate using shibboleth with LDAP. Here's the ColdFusion error.

Element MYSITESHIBBOLETH.USERNAME is undefined in SESSION. The specific sequence of files included or processed is: \\commonspotshare.mysite.com\commonspot$\TEST\test.mysite.com\authenticate.cfm, line: 32

And here's the authenicate.cfm file line 32.