Cannot Edit Segmentation Rule in Language Resources

I'm using Trados Studio 2024 18.0.1.2259. 

When I open any TM, right-click it to select Settings, click Language Resources, click Segmentation Rules, and then click Edit on any of the default segmentation rules, I get the following error:

Screenshot of Trados Studio Translation Memory Settings window with an error dialog box. The error message reads 'Value cannot be null. Parameter name: item'. The Segmentation Rules tab is open with 'Sentence based segmentation' selected and 'Edit' button highlighted.

This not only happens to all my existing TMs, but also the newly created ones. 

Here is the Error Report:

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<SDLErrorDetails time="11/27/2024 8:10:18 PM">
<ErrorMessage>Value cannot be null.
Parameter name: item</ErrorMessage>
<Exception>
<Type>System.ArgumentNullException, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</Type>
<ParamName>item</ParamName>
<HelpLink />
<Source>System.Windows.Forms</Source>
<HResult>-2147467261</HResult>
<StackTrace><![CDATA[ at System.Windows.Forms.ComboBox.ObjectCollection.AddInternal(Object item)
at System.Windows.Forms.ComboBox.ObjectCollection.Add(Object item)
at Sdl.TranslationStudio.TranslationMemoryManager.SegmentationRules.Controls.BasicRuleEditorControl.AddOptionsToComboBoxes()
at Sdl.TranslationStudio.TranslationMemoryManager.SegmentationRules.Controls.BasicRuleEditorControl..ctor()
at Sdl.TranslationStudio.TranslationMemoryManager.SegmentationRules.Controls.EditRuleControl.SetupRuleEditors()
at Sdl.TranslationStudio.TranslationMemoryManager.SegmentationRules.Controls.EditRuleControl..ctor()
at Sdl.TranslationStudio.TranslationMemoryManager.SegmentationRules.EditRuleDialog.InitializeComponent()
at Sdl.TranslationStudio.TranslationMemoryManager.SegmentationRules.EditRuleDialog..ctor(CultureInfo languageCulture, Boolean addRule)
at Sdl.TranslationStudio.TranslationMemoryManager.SegmentationRules.Controls.EditRulesControl.EditSelectedSegmentationRule()
at Sdl.TranslationStudio.TranslationMemoryManager.SegmentationRules.Controls.EditRulesControl._sentenceRuleEditButton_Click(Object sender, EventArgs e)
at System.Windows.Forms.Control.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnClick(EventArgs e)
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX



Generated Image Alt-Text
[edited by: RWS Community AI at 12:21 PM (GMT 0) on 27 Nov 2024]
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