"Here is a new Document".newTextWindow;

-> Here is a new Document
ERROR: Primitive '_ScIDE_SetDocSelectionMirror' failed.
Wrong type.
RECEIVER:
Instance of Document {    (0x113a3d4c8, gc=CC, fmt=00, flg=00, set=04)
  instance variables [16]
    quuid : Symbol '{336ead9b-04d6-4c6b-82e4-b3172bc76b36}'
    title : "Untitled"
    isEdited : nil
    path : nil
    keyDownAction : nil
    keyUpAction : nil
    mouseUpAction : nil
    mouseDownAction : nil
    toFrontAction : nil
    endFrontAction : nil
    onClose : nil
    textChangedAction : nil
    envir : false
    savedEnvir : nil
    editable : true
    promptToSave : true
}
CALL STACK:
    MethodError:reportError   0x11dcbe6d8
        arg this = <instance of PrimitiveFailedError>
    Nil:handleError   0x11dcbe428
        arg this = nil
        arg error = <instance of PrimitiveFailedError>
    Thread:handleError   0x11dcbf448
        arg this = <instance of Thread>
        arg error = <instance of PrimitiveFailedError>
    Object:throw   0x11dcc01b8
        arg this = <instance of PrimitiveFailedError>
    Object:primitiveFailed   0x11dcc0718
        arg this = <instance of Document>
    Document:prSetSelectionMirror   0x1184cb6e8
        arg this = <instance of Document>
        arg quuid = '{336ead9b-04d6-4c6b-82e4-b3172bc76b36}'
        arg start = nil
        arg size = nil
    Document:initFromIDE   0x1189541c8
        arg this = <instance of Document>
        arg id = '{336ead9b-04d6-4c6b-82e4-b3172bc76b36}'
        arg argtitle = "Untitled"
        arg argstring = "Here is a new Document"
        arg argisEdited = true
        arg argPath = ""
        arg selStart = nil
        arg selSize = nil
    Meta_Document:syncFromIDE   0x11891a848
        arg this = <instance of Meta_Document>
        arg quuid = '{336ead9b-04d6-4c6b-82e4-b3172bc76b36}'
        arg title = "Untitled"
        arg chars = "Here is a new Document"
        arg isEdited = true
        arg path = ""
        arg selStart = 0
        arg selSize = 0
        var doc = <instance of Document>
    Process:interpretCmdLine   0x11dcc1538
        arg this = <instance of Main>
^^ The preceding error dump is for ERROR: Primitive '_ScIDE_SetDocSelectionMirror' failed.
Wrong type.
RECEIVER: a Document