User profile provisioning: System.Collections.Generic.KeyNotFoundException

Provisioning users to SharePoint for the 1st time on IdB 5.1 and encountered the following error.

System.Collections.Generic.KeyNotFoundException: The key 0799C19A00044B368A7D06D9AE23CC07 could not be found in the list of known profile types. The known types are UserProfile_GUID, SID, ADGuid, AccountName, FirstName, SPS-PhoneticFirstName, LastName, SPS-PhoneticLastName, PreferredName, SPS-PhoneticDisplayName, WorkPhone, Department, Title, SPS-JobTitle, Manager, AboutMe, PersonalSpace, PictureURL, UserName, QuickLinks, WebSite, PublicSiteRedirect, SPS-DataSource, SPS-MemberOf, SPS-Dotted-line, SPS-Peers, SPS-Responsibility, SPS-SipAddress, SPS-MySiteUpgrade, SPS-DontSuggestList, SPS-ProxyAddresses, SPS-HireDate, SPS-DisplayOrder, SPS-ClaimID, SPS-ClaimProviderID, SPS-ClaimProviderType, SPS-LastColleagueAdded, SPS-OWAUrl, SPS-SavedAccountName, SPS-SavedSID, SPS-ResourceSID, SPS-ResourceAccountName, SPS-ObjectExists, SPS-MasterAccountName, SPS-DistinguishedName, SPS-SourceObjectDN, SPS-LastKeywordAdded, WorkEmail, CellPhone, Fax, HomePhone, Office, SPS-Location, SPS-TimeZone, Assistant, SPS-PastProjects, SPS-Skills, SPS-School, SPS-Birthday, SPS-StatusNotes, SPS-Interests, SPS-EmailOptin, ResponsibleSupervisorEntities, AnalysisEntities, RoleLevel, CostCentre, Company, DaysAtOffice, StaffType, usrDivision, Team, GroupOrg, Branch, Floor, RoleDescriptionUrl
   at Unify.Product.IdentityBroker.SharePoint2010Utilities.ConvertAttributeToValues(KeyValuePair`2 attribute, IDictionary`2 profileTypes, IValueAdapter`2 referenceValueToUserProfileNameAdapter, UserProfileNameToStringAdapter userProfileToNameAdapter)
   at Unify.Product.IdentityBroker.SharePoint2010UserProfileConnector.<ConvertConnectorEntityToPropertyData>b__22_1(<>f__AnonymousType3`2 <>h__TransparentIdentifier0)
   at System.Linq.Enumerable.WhereSelectEnumerableIterator`2.MoveNext()
   at System.Linq.Buffer`1..ctor(IEnumerable`1 source)
   at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source)
   at Unify.Product.IdentityBroker.SharePoint2010UserProfileConnector.ConvertConnectorEntityToPropertyData(IEnumerable`1 entity)
   at Unify.Product.IdentityBroker.SharePoint2010UserProfileConnector.AddEntity(IConnectorEntity entity, ISharePoint2010UserProfileService communicatorChannel)
   at Unify.Product.IdentityBroker.SharePoint2010UserProfileConnector.<>c__DisplayClass7_1.<AddEntities>b__1(IConnectorEntity entity)
   at Unify.Framework.Visitor.Visit[T](IEnumerable`1 visitCollection, Action`2 visitor)
   at Unify.Product.IdentityBroker.SharePoint2010UserProfileConnector.<>c__DisplayClass7_0.<AddEntities>b__0(ISharePoint2010UserProfileService channel)
   at Unify.Product.IdentityBroker.SharePointWCFAgent.Execute[TService](WcfCommunicatorFactory`1 serviceFactory, Action`1 service, Int32 maxItemsInObjectGraph)
   at Unify.Product.IdentityBroker.SharePoint2010UserProfileConnector.AddEntities(IEnumerable`1 entities, ISaveEntityResults`2 results)
   at Unify.Product.IdentityBroker.AuditAddingConnectorDecorator.AddEntities(IEnumerable`1 entities, ISaveEntityResults`2 results)
   at Unify.Product.IdentityBroker.EventNotifierAddingConnectorDecorator.AddEntities(IEnumerable`1 entities, ISaveEntityResults`2 results)