If I have UFT and my AUT open, if I want to change the FONT Style in Options > Text Editor > Fonts & Colors, then my AUT crashes/closes and UFT shows the following error:

Exception of type: System.ArgumentException. Source: System.Drawing. Occured in Void CreateNativeFont() method
Exception message is: Font ‘Vidaloka’ does not support style ‘Regular’.
Exception trace is: at System.Drawing.Font.CreateNativeFont()
at System.Drawing.Font.Initialize(FontFamily family, Single emSize, FontStyle style, GraphicsUnit unit, Byte gdiCharSet, Boolean gdiVerticalFont)
at System.Drawing.Font..ctor(FontFamily family, Single emSize)
at HP.UFT.ConfigurationUI.FontDescriptor.DetectMonospaced(FontFamily fontFamily)
at HP.UFT.ConfigurationUI.FontSelectionControl.PrepareFontList(Object state)
at System.Threading.QueueUserWorkItemCallback.WaitCallback_Context(Object state)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx)
at System.Threading.QueueUserWorkItemCallback.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem()
at System.Threading.ThreadPoolWorkQueue.Dispatch()
at System.Threading._ThreadPoolWaitCallback.PerformWaitCallback()

SharpDevelop Version : 4.1.1.0-00000000
.NET Version : 4.0.30319.1
OS Version : Microsoft Windows NT 6.1.7600.0
Current culture : English (United States) (en-US)
Working Set Memory : 213800kb
GC Heap Memory : 19549kb

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—- Post-error application state information:
Installed 3rd party AddIns: [${res:Addin.UFT.File.Dialog.UFT.Only} 11.50.0.0], [ActiveScreenPane 0.0.0.0], [QTP DataTable Addin], [QTP Debugger addin based on UT Debugger 0.0.0.0], [QTP FileDialog 0.0.0.0], [HP QTP Property Tabs 0.0.0.0], [ALM Storage 11.50.0.0], [HP Basic Extensibility 11.50.0.0], [HP Designer UI Extensibility 11.50.0.0], [HP SOAReplayAPI Extensibility 11.50.0.0], [${res:HP_Async} 11.50.0.0], [${res:HP_Checkpoints} 11.50.0.0], [${res:STDataProvider_HP_Data_Providers} 11.50.0.0], [${res:BasicActivity_HP_Basic_Activities} 11.50.0.0], [${res:HP_BPT_Integration} 11.50.0.0], [HP CSharp Translation Layer 11.50.0.0], [${res:HP_Database_Activities} 11.50.0.0], [${res:HP_Standard_Import_Technologies} 11.50.0.0], [HP Framework Upgraders 11.50.0.0], [${res:HP_FTP_Activities} 11.50.0.0], [ST Debugger addin based on UT Debugger 11.50.0.0], [${res:HTTP_Activity} 11.50.0.0], [${res:HP_Receiver_Activity} 11.50.0.0], [Run Step Pad 11.50.0.0], [${res:HP_Java_Call_Addin} 11.50.0.0], [${res:HP_JMS_Technology} 11.50.0.0], [${res:HP_LoadRunner_Integration} 11.50.0.0], [${res:HP_MQ_Activities} 11.50.0.0], [${res:PropertySheet_HP_Basic_Property_Sheet} 11.50.0.0], [${res:HP_Rest_Technology} 11.50.0.0], [${res:HP_UFT_STM} 11.50.0.0], [${res:HP_Service_Test_runner} 11.50.0.0], [HP Basic Framework 11.50.0.0], [Toolbox Default Presenter 11.50.0.0], [HP Toolbox UI Extensibility 11.50.0.0], [${res:HP_Transform_JSON_Addin} 11.50.0.0], [${res:HP_Transform_Xml_Addin} 11.50.0.0], [${res:HP_QTP_test_runner} 11.50.0.0], [${res:HP_Validate_Xml_Addin} 11.50.0.0], [VTD Extensibility 11.50.0.0], [${res:HP_Run_Vugen_Addin} 11.50.0.0], [${res:Wait_Activity} 11.50.0.0], [${res:WSImportTechnology_HP_Standard_Import_Technologies} 11.50.0.0], [HP Shell Services 11.50.0.0], [${res:Addin.UFT.Data.Explorer} 11.50.0.0], [UTT Configuration UI 11.50.0.0], [Debug Pad Wrapper Extension addin for UTT 11.50.0.0], [UTT Debug Basic implementation addin for UTT 11.50.0.0], [UTT File Dialog 11.50.0.0], [${res:Addin.UFT.File.System} 11.50.0.0], [${res:Addin.UFT.ALM} 11.50.0.0], [UTT Connection Addin 11.50.0