grumpfish error

[Gerrit]

DC_GUIGrumpBrow('AEDVLQSO') called get the following error
only a recent error - say build 258
any suggestions as to what is wrong
error:Description: Receiver of message is not an object.
Code: 38
Operation: setModalState
Args: {{NIL, NIL, NIL, NIL, NIL, NIL, NIL, NIL, NIL, DC_XbpDialog1, DC_XbpDialog1, NIL, .T., thread, .T.}, 1}

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Stack Trace:
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Called from (B)WINDOWMANAGER:BUILDSCREEN(201)
Called from DC_IMPL(344)
Called from DC_GETLIST:READGUI(3556)
Called from DC_READGUI(109)
Called from GUIFORMEDIT(2081)
Called from BUTTONHIT(1257)
Called from (B)DC_GUIGRUMPBROW(683)
Called from DC_XBPPUSHBUTTON:ACTION(2379)
Called from (B)DC_XBPPUSHBUTTON:INIT(1949)
Called from XBPPUSHBUTTON:HANDLEEVENT(987)
Called from DC_GETLIST:EVENTLOOP(4558)
Called from DC_GETLIST:READGUI(3777)
Called from DC_READGUI(109)

[rdonnay]

I don't use the grump stuff and haven't touched the code in 10 years.

Your'e saying this is happening only in build 258?

I don't think I even wrote a test program for the grump stuff.