PeoplePickerWildcards SharePoint 2013 FBA using AD LDS

I have a SharePoint web app that is configured with AD LDS Role and Membership providers.  We are having issues getting the "peoplepickerwildcard" to work.  I believe I see the issue in the SharePoint ULS logs, where it says it can't retrieve the key and thus, doesn't create the correct wild-carded query later on.  If we enter the complete email address, it finds it and it can be added.

All of the web.config files (App, STS and SCA) have this section (the AspNetSqlMembershipProvider was there and we left it alone):

    <PeoplePickerWildcards>
      <clear />
      <add key="AspNetSqlMembershipProvider" value="%" />
      <add Key="LDAPMember" value="*" />
      <add key="LDAPRole" value="*" />
    </PeoplePickerWildcards>

"Fail to retreive Web.Config (SharePoint/PeoplePickerWildcards. Exception: Required attribute 'key' not found."

In this example, I'm searching for "edelga" which is the beginning of an email address.

07/29/2015 19:17:09.97*        w3wp.exe (0x1BE0)                              0x23B8        SharePoint Foundation                CSOM                                 afxv6        Verbose         ...rty><Property Name="PrincipalType" Type="Number">5</Property><Property Name="QueryString" Type="String">edelga</Property><Property Name="Required" Type="Boolean">true</Property><Property Name="SharePointGroupID" Type="Number">0</Property><Property Name="UrlZone" Type="Number">0</Property><Property Name="UrlZoneSpecified" Type="Boolean">false</Property><Property Name="Web" Type="Null" /><Property Name="WebApplicationID" Type="String">{00000000-0000-0000-0000-000000000000}</Property></Parameter></Parameters></StaticMethod></Actions><ObjectPaths /></Request>        7ce41e9d-a88d-d04e-591c-24f9c508c8ec

Any insight is greatly appreciated!

Thanks...Russ