Edited Unassigned: error 2010: The Column 'ColumnName' specified as part of this MSL does not exist in MetadataWorkspace. [1021]

Hello,
I am using __EntityFramework.6.0.0-alpha3-20405__
I have some Code First TPH classes. The above error seem to appear randomly with certain InverseProperty associations. Any leads will be appreciated.

Here is the stack trace:

```
System.Data.Entity.Core.MappingException was unhandled
HResult=-2146232032
Message=Schema specified is not valid. Errors:
(631,12) : error 2010: The Column 'LineTotalAmount' specified as part of this MSL does not exist in MetadataWorkspace.
(632,12) : error 2010: The Column 'LineNetAmount' specified as part of this MSL does not exist in MetadataWorkspace.
(633,12) : error 2010: The Column 'VATPercentage' specified as part of this MSL does not exist in MetadataWorkspace.
(895,12) : error 2010: The Column 'CostEach' specified as part of this MSL does not exist in MetadataWorkspace.
Source=EntityFramework
StackTrace:
at System.Data.Entity.Core.Mapping.StorageMappingItemCollection.Init(EdmItemCollection edmCollection, StoreItemCollection storeCollection, IEnumerable`1 xmlReaders, IList`1 filePaths, Boolean throwOnError)
at System.Data.Entity.Core.Mapping.StorageMappingItemCollection..ctor(EdmItemCollection edmCollection, StoreItemCollection storeCollection, IEnumerable`1 xmlReaders)
at System.Data.Entity.ModelConfiguration.Edm.DbDatabaseMappingExtensions.ToStorageMappingItemCollection(DbDatabaseMapping databaseMapping, EdmItemCollection itemCollection, StoreItemCollection storeItemCollection)
at System.Data.Entity.ModelConfiguration.Edm.DbDatabaseMappingExtensions.ToMetadataWorkspace(DbDatabaseMapping databaseMapping)
at System.Data.Entity.Internal.CodeFirstCachedMetadataWorkspace..ctor(DbDatabaseMapping databaseMapping)
at System.Data.Entity.Infrastructure.DbCompiledModel..ctor(DbModel model)
at System.Data.Entity.Infrastructure.DbModel.Compile()
at System.Data.Entity.Internal.LazyInternalContext.CreateModel(LazyInternalContext internalContext)
at System.Data.Entity.Internal.RetryLazy`2.GetValue(TInput input)
at System.Data.Entity.Internal.LazyInternalContext.InitializeContext()
at System.Data.Entity.Internal.InternalContext.Initialize()
at System.Data.Entity.Internal.InternalContext.GetEntitySetAndBaseTypeForType(Type entityType)
at System.Data.Entity.Internal.Linq.InternalSet`1.Initialize()
at System.Data.Entity.Internal.Linq.InternalSet`1.get_InternalContext()
at System.Data.Entity.Infrastructure.DbQuery`1.System.Linq.IQueryable.get_Provider()
at System.Linq.Queryable.FirstOrDefault[TSource](IQueryable`1 source)
at BGAE.Code.CreateAccount.CreateCashPurchase() in j:\CollectedGarbage\TestBgae\TestBgae\CreateAccount.cs:line 47
at TestBgae.Program.Main(String[] args) in j:\CollectedGarbage\TestBgae\TestBgae\Program.cs:line 14
at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
InnerException:
```