Sofistik 2026-3, Rhino 8 SR27, Excel 2021, Win 10 x64.
The GH and Excel files are from sofistik official tutorial
If I had BHOM 9 installed, then Sofistik excel component doesn’t work.
If I use a Excel spreadsheet component called "Pancake Spreadsheet, which is shown in blueframe, the excel can be read successfully.
According to Pancake Spreadsheet
With the help of NPOI, Pancake Spreadsheet can read and write xlsx(x) files without Excel installed. Besides it is faster and more stable. Basic example files are also included.