I've created a design table in my part, saved the design table as an Excel file.

If I try to open the saved design table in Excel I get the following error message:

"Excel cannot open the file "xxxxx.xlsx" because the file format or file extension is not valid. Verify that the file has not been corrupted and that the file extension matches the format of the file."

Is this normal?

Did I do something wrong?

Any ideas?

Thanks,

Richard in Houston