Umbraco  6.0.0 MVC mode Contour 3.0.6

If you add a contour form using (Insert form from Umbraco Contour(Razor)) and it is sitting at the top of the page in a rich text placeholder example below.

You cannot enter text above it? It will enter the text in the macro box area then remove it when it is saved.

If you attempt to remove the form and save you get the following error

[ArgumentOutOfRangeException: Index and length must refer to a location within the string.
Parameter name: length]
   System.String.InternalSubStringWithChecks(Int32 startIndex, Int32 length, Boolean fAlwaysCopy) +9385135
   umbraco.editorControls.tinyMCE3.TinyMCE.replaceMacroTags(String text) +81
   umbraco.editorControls.tinyMCE3.TinyMCE.Save() +64
   umbraco.controls.ContentControl.saveClick(Object Sender, ImageClickEventArgs e) +210
   System.Web.UI.WebControls.ImageButton.OnClick(ImageClickEventArgs e) +115
   System.Web.UI.WebControls.ImageButton.RaisePostBackEvent(String eventArgument) +120
   System.Web.UI.WebControls.ImageButton.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) 
+10
   System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13
   System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +36
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) 
+5563