Aargh!

This brought down SSMS by dint of a system modal dialog box that wouldn't go away. Every time one tried to kill it it just popped back.

Error was.....


See the end of this message for details on invoking
just-in-time (JIT) debugging instead of this dialog box.

************** Exception Text **************
System.ArgumentOutOfRangeException: Specified argument was out of the range of valid values.
Parameter name: position
at RedGate.SqlPrompt.Engine.Script.AbstractScriptProvider.GetLineTextToPosition(CaretPosition position)
at _203._2(CaretPosition )
at _203._3(CaretPosition )
at _203._3()
at RedGate.SqlPrompt.Engine.SqlPromptEngine.UpdateCandidateLists()
at RedGate.SqlPrompt.Engine.SqlPromptEngine._1(Boolean )
at RedGate.SqlPrompt.Engine.SqlPromptEngine.SetAsCurrentEngine()
at RedGate.SQLPrompt.CommonUI.Editor.EditorWindowBase.OnSetFocus()
at RedGate.SQLPrompt.CommonVS.Editor.VSEditorWindow.OnTextViewSetFocus(TextViewMonitor textViewMonitor)