I spent several hours aligning two docx files, but am now unable to import the finished result into my (file-based) TM. I also cannot save it as .sdlalign or .sdlxliff.

Before, when trying to realign, I also received a "some of the alignments are complex" (or similar) error.

All suggested solutions I found in my search so far would include closing Studio, which I cannot do because I would lose all of my work.

Software:
Microsoft Windows 10 Home x64
Trados Studio 2021 SR2 - 16.2.12.9338

Error details:

<SDLErrorDetails time="17.09.2023 09:44:36">

  <ErrorMessage>Object reference not set to an instance of an object.</ErrorMessage>

  <Exception>

    <Type>System.NullReferenceException, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</Type>

    <HelpLink />

    <Source>Sdl.TranslationStudio.AlignmentEditor</Source>

    <HResult>-2147467261</HResult>

    <StackTrace><![CDATA[   at Sdl.TranslationStudio.AlignmentEditor.Jobs.RealignJobRequest.ExecuteJob(IJobExecutionContext context)

   at Sdl.TranslationStudio.AlignmentEditor.Jobs.AlignmentJobRequest.Execute(IJobExecutionContext context)]]></StackTrace>

  </Exception>

  <Environment>

    <ProductName>Trados Studio</ProductName>

    <ProductVersion>Studio16</ProductVersion>

    <EntryAssemblyFileVersion>16.2.12.9338</EntryAssemblyFileVersion>

    <OperatingSystem>Microsoft Windows 10 Home</OperatingSystem>

    <ServicePack>NULL</ServicePack>

    <OperatingSystemLanguage>1031</OperatingSystemLanguage>

    <CodePage>1252</CodePage>

    <LoggedOnUser>LAPTOP-J4O4RV1D\brink</LoggedOnUser>

    <DotNetFrameWork>4.0.30319.42000</DotNetFrameWork>

    <ComputerName>LAPTOP-J4O4RV1D</ComputerName>

    <ConnectedToNetwork>True</ConnectedToNetwork>

    <PhysicalMemory>8302500 MB</PhysicalMemory>

  </Environment>

</SDLErrorDetails>

Any help? TIA!