Trados Studio 2015 在编辑页面（快速）添加术语时报错

Trados Studio 2015 在编辑页面（快速）添加术语时报错，而且报错信息关闭不了，叉掉就会弹出，用资源管理器也无济于事，只能将软件关闭，重新运行，实在令人崩溃 o(╥﹏╥)o（保存的xml 报错文件代码如下）  请路过的高手们指点迷津，不胜感激！

<SDLErrorDetails time="2019/5/2 1:55:32">

       <ErrorMessage>未知异常。</ErrorMessage>

       <Exception>

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

              <HelpLink></HelpLink>

              <Source></Source>

              <HResult>-2147467261</HResult>

              <StackTrace></StackTrace>

          </Exception>

       <Environment>

              <ProductName>SDL Trados Studio</ProductName>

              <ProductVersion>12.0.0.0</ProductVersion>

              <EntryAssemblyFileVersion>12.0.4809.0</EntryAssemblyFileVersion>

              <OperatingSystem>Microsoft Windows 7 旗舰版</OperatingSystem>

              <ServicePack>Service Pack 1</ServicePack>

              <OperatingSystemLanguage>2052</OperatingSystemLanguage>

              <CodePage>936</CodePage>

              <LoggedOnUser>RYE\Administrator</LoggedOnUser>

              <DotNetFrameWork>4.0.30319.42000</DotNetFrameWork>

              <ComputerName>RYE</ComputerName>

              <ConnectedToNetwork>True</ConnectedToNetwork>

              <PhysicalMemory>3012828 MB</PhysicalMemory>

          </Environment>

   </SDLErrorDetails>