Was this ever fixed? I’m on C3D 2026.2 and when I try to use the Data.OpenXMLExportExcel node then I get the same corruption message in Excel on open. It also deletes many of the cell contents.
My data contains many values with commas, so I can’t use the Data.ExportCSV option and now I’m stuck not being able to export to something I can use in Excel.
EDIT: I deleted the XLSX file completely that was on ACC and reran the graph. It seems to have fixed the error!