I've got a really simple class that is giving a strange error. The class only has 1 property and the query is really simple. The stranglest part is that this seems to happen randomly. After getting this error usually refreshing the page makes it go a way and the application doesn't get the errror again.

Could this be a problem with the database connection?

I'm getting:

[IndexOutOfRangeException: Department5_]
   System.Data.ProviderBase.FieldNameLookup.GetOrdinal(String fieldName) +4839010
   System.Data.SqlClient.SqlDataReader.GetOrdinal(String name) +67
   NHibernate.Driver.NHybridDataReader.GetOrdinal(String name) +46
   NHibernate.Type.NullableType.NullSafeGet(IDataReader rs, String name) +87
   NHibernate.Type.NullableType.NullSafeGet(IDataReader rs, String[] names, ISessionImplementor session, Object owner) +62
   NHibernate.Loader.Loader.GetKeyFromResultSet(Int32 i, IEntityPersister persister, Object id, IDataReader rs, ISessionImplementor session) +213
   NHibernate.Loader.Loader.GetRowFromResultSet(IDataReader resultSet, ISessionImplementor session, QueryParameters queryParameters, LockMode[] lockModeArray, EntityKey optionalObjectKey, IList hydratedObjects, EntityKey[] keys, Boolean returnProxies) +301
   NHibernate.Loader.Loader.DoQuery(ISessionImplementor session, QueryParameters queryParameters, Boolean returnProxies) +1422
   NHibernate.Loader.Loader.DoQueryAndInitializeNonLazyCollections(ISessionImplementor session, QueryParameters queryParameters, Boolean returnProxies) +114
   NHibernate.Loader.Loader.DoList(ISessionImplementor session, QueryParameters queryParameters) +205

[ADOException: could not execute query
[ select department0_.Department as Department5_ from tblDepartments department0_ where department0_.Department like 'CBS - %' ]
[SQL: select department0_.Department as Department5_ from tblDepartments department0_ where department0_.Department like 'CBS - %']]
   NHibernate.Loader.Loader.DoList(ISessionIm
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