When opening a second file, I receive this error and have to close and open again. I cannot open two files simultaneously anymore, when I could in the past. Can someone please help
<SDLErrorDetails time="13.05.2024 13:55:26"> <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.Editor</Source> <HResult>-2147467261</HResult> <StackTrace><![CDATA[ at Sdl.TranslationStudio.Editor.Terminology.TermbaseViewer.TermBaseViewPartX.CanAddTerm() at Sdl.TranslationStudio.Editor.Terminology.EditorTermbaseUtils.HasWritePermission(IEditorService editorService, ITranslatableDocument activeDocument) at Sdl.TranslationStudio.Editor.Terminology.Actions.Conditions.SourceTermSelectedForAddition.GetValue() at Sdl.TranslationStudio.Editor.Terminology.Actions.Conditions.AddNewTermCondition.GetValue() at Sdl.Desktop.Platform.Extensions.AbstractCondition.UpdateValue() at Sdl.TranslationStudio.Api.Editor.Conditions.ActiveDocumentCondition`1.ActiveDocumentConditionAttribute_ActiveDocumentChanged(IDocument document) at Sdl.TranslationStudio.Api.Editor.DocumentEventHandler.Invoke(IDocument document) at Sdl.TranslationStudio.Editor.EditorService.set_ActiveDocument(IDocument value) at Sdl.TranslationStudio.Editor.EditorView.OnActiveViewPartChanged(IViewPartReference viewPartReference) at Sdl.Desktop.Platform.AbstractDockingView.Control_ActiveViewPartChanged(IViewWithParts view, IViewPartReference viewPartReference) at Sdl.Platform.UI.DockingViewContentControl.OnActiveViewPartChanged(IViewPartReference viewPartReference) at Sdl.Platform.UI.DockingViewContentControl.InternalActivateViewPart(IViewPartReference viewPartToActivate) at Sdl.Platform.UI.DockingViewContentControl._tabControl_SelectedTabChanged(Object sender, SelectedTabChangedEventArgs e) at Infragistics.Win.UltraWinTabControl.UltraTabControlBase.OnSelectedTabChanged(SelectedTabChangedEventArgs e) at Infragistics.Win.UltraWinTabControl.UltraTabControlBase.RaiseEvent(UltraTabControlEventId id, EventArgs e) at Infragistics.Win.UltraWinTabControl.UltraTabControlBase.OnManagerSelectedTabItemChanged(Object sender, SelectedTabItemChangedEventArgs e) at Infragistics.Win.UltraWinTabs.TabManager.set_SelectedTabItem(ITabItem value) at Infragistics.Win.UltraWinTabs.TabManager.TabClick(ITabItem tab) at Infragistics.Win.UltraWinTabs.TabItemUIElement.OnMouseDown(MouseEventArgs e, Boolean adjustableArea, UIElement& captureMouseForElement) at Infragistics.Win.UIElement.OnMouseDown(MouseEventArgs e, Boolean adjustableArea, UIElement& captureMouseForElement) at Infragistics.Win.TextUIElementBase.OnMouseDown(MouseEventArgs e, Boolean adjustableArea, UIElement& captureMouseForElement) at Infragistics.Win.ControlUIElementBase.ProcessMouseDownHelper(Object sender, MouseEventArgs e) at Infragistics.Win.ControlUIElementBase.ProcessMouseDown(Object sender, MouseEventArgs e) at Infragistics.Win.Utilities.ProcessEvent(Control control, ProcessEvent eventToProcess, EventArgs e) at Infragistics.Win.UltraControlBase.OnMouseDown(MouseEventArgs e) at System.Windows.Forms.Control.WmMouseDown(Message& m, MouseButtons button, Int32 clicks) at System.Windows.Forms.Control.WndProc(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m) at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)]]></StackTrace> </Exception> <Environment> <ProductName>Trados Studio</ProductName> <ProductVersion>Studio17</ProductVersion> <EntryAssemblyFileVersion>17.2.10.19084</EntryAssemblyFileVersion> <OperatingSystem>Microsoft Windows 11 Home</OperatingSystem> <ServicePack>NULL</ServicePack> <OperatingSystemLanguage>1033</OperatingSystemLanguage> <CodePage>1252</CodePage> <LoggedOnUser>LAPTOP-56AHFB9M\chris</LoggedOnUser> <DotNetFrameWork>4.0.30319.42000</DotNetFrameWork> <ComputerName>LAPTOP-56AHFB9M</ComputerName> <ConnectedToNetwork>True</ConnectedToNetwork> <PhysicalMemory>8280772 MB</PhysicalMemory> </Environment> </SDLErrorDetails>