Getting Unrecoverable error 9201: hb_cdxPageSeekKey: wrong parent key.

[WildSwan]

Application Internal Error - F:\TritonV.exe
Terminated at: 2026-08-18 13:19:45
Info: Harbour MiniGUI Extended Edition 26.06.0 (32-bit) ANSI
Unrecoverable error 9201: hb_cdxPageSeekKey: wrong parent key.
Called from DBUNLOCK(0)
Called from ORFADDLINE(2603) in Order.prg
Called from ORFADDSEEKPROD(2521) in Order.prg
Called from (b)ORFRUN(275) in Order.prg
Called from _DOCONTROLEVENTPROCEDURE(2058) in h_windows.prg
Called from EVENTS(2312) in h_events.prg
Called from DOMESSAGELOOP(0)
Called from _ACTIVATEWINDOW(1652) in h_windows.prg
Called from ORFRUN(293) in Order.prg
Called from (b)MAIN(114) in main.prg
Called from _DOCONTROLEVENTPROCEDURE(2058) in h_windows.prg
Called from EVENTS(1697) in h_events.prg
Called from DOMESSAGELOOP(0)
Called from _ACTIVATEWINDOW(1652) in h_windows.prg
Called from MAIN(152) in main.prg

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Does anyone experience this and have a fix?