AlignTranslationUnits function in TM API throws "Specified method is not supported"

Question

Hi all, 
 
 I am writing a small tool to batch update TMs for upLift. But I am not able to run the AlignTranslation units function. This is my code - I cannot see what I am doing wrong. I also saw there is a similar plugin on gitHub, but I would like to create an external tool that allows to do this outside of Studio. I am writing in vb.net and here is my code: 
 'creating and configuring TM 
 Dim NewTM As String = UpdatedTMsPath & "\" & File.ToString Dim NewFileBasedTM As New Sdl.LanguagePlatform.TranslationMemoryApi.FileBasedTranslationMemory(NewTM, "", CultureInfo.GetCultureInfo(SourceLng), CultureInfo.GetCultureInfo(TargetLng), FuzzyIndexes.SourceWordBased, BuiltinRecognizers.RecognizeAll, TokenizerFlags.DefaultFlags, WordCountFlags.DefaultFlags, supportsAlignmentData:=True) NewFileBasedTM.FGASupport = FGASupport.Automatic NewFileBasedTM.Save() 
 'running import of TMX into TM 
 Dim TMImporter As New Sdl.LanguagePlatform.TranslationMemoryApi.TranslationMemoryImporter(NewFileBasedTM.LanguageDirection) AddHandler TMImporter.BatchImported, AddressOf Importer_BatchImported TMImporter.ChunkSize = 100 TMImporter.ImportSettings.ExistingTUsUpdateMode = ImportSettings.TUUpdateMode.AddNew TMImporter.ImportSettings.TUProcessingMode = ImportSettings.ImportTUProcessingMode.ProcessBothTUs TMImporter.ImportSettings.ExistingFieldsUpdateMode = ImportSettings.FieldUpdateMode.Merge TMImporter.ImportSettings.NewFields = ImportSettings.NewFieldsOption.AddToSetup TMImporter.Import(TMXImportFile) 
 'building TM model and running FGA 
 NewFileBasedTM.BuildModel() NewFileBasedTM.Save() Dim MyIterator As New RegularIterator() NewFileBasedTM.AlignTranslationUnits(unalignedOnly:=True, unalignedOrPostdatedOnly:=False, iter:=MyIterator) <---- Here I get an exception

The message reads: An unhandled exception of type 'System.ServiceModelFaultException'1' occurred in SDL.LanguagePlatform.TranslationMemoryImpl.dll 
 Additional information: Specified method is not supported 
 I am out of wits - if you have an idea what I do wrong, please let me know. 
 
 Many thanks in advance, 
 Tom

Tom Imhof · Accepted Answer

Should anybody here be interested or run into the same problem at some stage, I could solve the problem using the second variant of the AlignTranslationUnits method: 
 
Dim token As CancellationToken 
Dim progress As New Progress(Of Integer) 
 Try 
 NewFileBasedTM.AlignTranslationUnits(unalignedOnly:=False, unalignedOrPostdatedOnly:=False, token:=token, progress:=progress)<---- THIS METHOD WORKS 
 Catch ex As Exception 
 MsgBox("There was an error running fine-grained alignment. The original exception throw by SDL Trados Studio was: " & ex.ToString) 
 End Try

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AlignTranslationUnits function in TM API throws "Specified method is not supported"