Another one. I had to click a about 5 times on error message.

Code:
C:\Program Files (x86)\DataFlex 19.1\Bin\Studio.exe
COM object method invocation error. Invalid CDS node handle


Error: 4399


Please report this error to Data Access Corporation


GET_COMMERGEDOCUMENTBEFORENODE (10888) - oCDS (5154) - at address 76148
GET_MERGEDOCUMENT (13487) - oPasteManager (3166) - at address 125687
MSG_MOVENODE (13499) - oStudioCommand (781) - at address 132282
GET_EXECUTE@1 (10992) - oStudioCommand (781) - at address 132228
MSG_ONCOMMAND@2 (11009) - oActionManager (619) - at address 77046
MSG_ONCOMMANDSTRING (11010) - oActionManager (619) - at address 77064
MSG_ONIDLE (1564) - oMain (789) - at address 149951
[start] - at address 243593