I have one user that gets this on UserApp:

Error getting object: cn=nameofgroup,o=blah.
The definition for attribute key Description is single-valued, and
multiple values exist.

I'm not sure WHY that's coming up because:

It's supposed to take you to YOUR "My Profile" page upon login, not
lookup groups that you're a member of.

I found the offending group object and fixed it's description attribute
so that it only had one line instead of three.

But I'm puzzled as to WHY that would affect you being able to see your
profile, since it doesn't even show group membership on there.