If you have the Hot Key window open and press F1 you get a run time error.
************** Exception Text **************
System.ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index
at System.Collections.ArrayList.get_Item(Int32 index)
at C1.Win.C1FlexGrid.RowCollection.get_Item(Int32 index)
at MT.SettingsUI.SettingsTradingHotkeys.ProcessCmdKey(Message& msg, Keys keyData) in C:\MedvedTrader\MT\SettingsUI\SettingsTradingHotkeys.cs:line 1813
at System.Windows.Forms.Control.ProcessCmdKey(Message& msg, Keys keyData)
at System.Windows.Forms.Control.ProcessCmdKey(Message& msg, Keys keyData)
at MT.BaseGrid.ProcessCmdKey(Message& msg, Keys keyData) in C:\MedvedTrader\MT\BaseGrid.cs:line 977
at System.Windows.Forms.Control.PreProcessMessage(Message& msg)
at System.Windows.Forms.Control.PreProcessControlMessageInternal(Control target, Message& msg)
at System.Windows.Forms.Application.ThreadContext.PreTranslateMessage(MSG& msg)