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The TM may contain invalid translation units

Dears,

I have encountered a big problem opening one TM in SDL Trados Studio which has been inherited by me from my prevous predecessor (I work in a corporate translation department).

The message says it is corrupt...The full description is attached. I wonder if there is a little hope to restore this memory?

<SDLErrorDetails time="7/28/2017 11:32:54 AM">
  <ErrorMessage>An error occurred when searching the Translation Memory. The TM may contain invalid Translation Units.</ErrorMessage>
  <Exception>
    <Type>Sdl.LanguagePlatform.Core.LanguagePlatformException, Sdl.LanguagePlatform.Core, Version=1.6.0.0, Culture=neutral, PublicKeyToken=c28cdb26c445c888</Type>
    <HelpLink />
    <Source>Sdl.LanguagePlatform.TranslationMemoryApi</Source>
    <HResult>-2146233088</HResult>
    <StackTrace><![CDATA[   at Sdl.LanguagePlatform.TranslationMemoryApi.FileBasedTranslationMemoryLanguageDirection.GetTranslationUnits(RegularIterator& iterator)
   at Sdl.TranslationStudio.TranslationMemoryManager.RegularTmSearcher.RegularSearchJobRequest.Execute(IJobExecutionContext context)
   at Sdl.Desktop.Platform.Implementation.Services.Job.<_worker_DoWork>b__3()
   at Sdl.Desktop.Platform.Implementation.Services.Log.Resources(Object message, Action action)
   at Sdl.Desktop.Platform.Implementation.Services.Job._worker_DoWork(Object sender, DoWorkEventArgs e)
   at System.ComponentModel.BackgroundWorker.OnDoWork(DoWorkEventArgs e)
   at System.ComponentModel.BackgroundWorker.WorkerThreadStart(Object argument)]]></StackTrace>
  </Exception>
  <Environment>
    <ProductName>SDL Trados Studio</ProductName>
    <ProductVersion>12.0.0.0</ProductVersion>
    <EntryAssemblyFileVersion>12.3.5281.10</EntryAssemblyFileVersion>
    <OperatingSystem>Microsoft Windows 7 Enterprise N </OperatingSystem>
    <ServicePack>Service Pack 1</ServicePack>
    <OperatingSystemLanguage>1033</OperatingSystemLanguage>
    <CodePage>1252</CodePage>
    <LoggedOnUser>AD\almira.z</LoggedOnUser>
    <DotNetFrameWork>4.0.30319.42000</DotNetFrameWork>
    <ComputerName>PI45184</ComputerName>
    <ConnectedToNetwork>True</ConnectedToNetwork>
    <PhysicalMemory>4054512 MB</PhysicalMemory>
  </Environment>
</SDLErrorDetails>

Thank you in advance,

Almi