I have had the same error with all beta versions and it still persists with the official build.

Whenever I try to create an empty TM (or open a TM that worked just fine in 2015), I get the following error:

This is really frustrating as I can't create any TMs or if I open a previous TM it gets corrupted immediately!

Here are the error details:

<SDLErrorDetails time="23.11.2016 9.30.51">
  <ErrorMessage>Merkkijonoa ei tunnistettu kelvolliseksi DateTime-arvoksi.</ErrorMessage>
  <Exception>
    <Type>System.ServiceModel.FaultException`1[[Sdl.LanguagePlatform.Core.FaultDescription, Sdl.LanguagePlatform.Core, Version=1.6.0.0, Culture=neutral, PublicKeyToken=c28cdb26c445c888]], System.ServiceModel, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</Type>
    <Action />
    <HelpLink />
    <Source>Sdl.LanguagePlatform.TranslationMemoryImpl</Source>
    <HResult>-2146233087</HResult>
    <StackTrace><![CDATA[   kohteessa Sdl.LanguagePlatform.TranslationMemoryImpl.API.CreateTranslationMemory(Container container, TranslationMemorySetup setup)
   kohteessa Sdl.LanguagePlatform.TranslationMemoryApi.FileBasedTranslationMemory.FileBasedTranslationMemoryDescriptor..ctor(String tmFilePath, String description, CultureInfo sourceLanguage, CultureInfo targetLanguage, FuzzyIndexes indexes, BuiltinRecognizers recognizers, TokenizerFlags tokenizerFlags, WordCountFlags wordCountFlags, Boolean supportsAlignmentData)
   kohteessa Sdl.TranslationStudio.TranslationMemoryManager.TranslationMemoryWizard.FileBasedTranslationMemoryWizardData.CreateTranslationMemoryJobRequest.Execute(IJobExecutionContext context)
   kohteessa Sdl.Desktop.Platform.Implementation.Services.Job.<_worker_DoWork>b__3()
   kohteessa Sdl.Desktop.Platform.Implementation.Services.Log.Resources(Object message, Action action)
   kohteessa Sdl.Desktop.Platform.Implementation.Services.Job._worker_DoWork(Object sender, DoWorkEventArgs e)
   kohteessa System.ComponentModel.BackgroundWorker.OnDoWork(DoWorkEventArgs e)
   kohteessa System.ComponentModel.BackgroundWorker.WorkerThreadStart(Object argument)]]></StackTrace>
  </Exception>
  <Environment>
    <ProductName>SDL Trados Studio</ProductName>
    <ProductVersion>14.0.0.0</ProductVersion>
    <EntryAssemblyFileVersion>14.0.5746.0</EntryAssemblyFileVersion>
    <OperatingSystem>Microsoft Windows 10 Pro</OperatingSystem>
    <ServicePack>NULL</ServicePack>
    <OperatingSystemLanguage>1035</OperatingSystemLanguage>
    <CodePage>1252</CodePage>
    <LoggedOnUser>DESKTOP-2P7I4GB\Hannu</LoggedOnUser>
    <DotNetFrameWork>4.0.30319.42000</DotNetFrameWork>
    <ComputerName>DESKTOP-2P7I4GB</ComputerName>
    <ConnectedToNetwork>True</ConnectedToNetwork>
    <PhysicalMemory>4193520 MB</PhysicalMemory>
  </Environment>
</SDLErrorDetails>