Hi @yputhealy,
Instead of using st.download_button you could just create a Streamlit button and set it to download the data when clicked. I’m not sure if st.download_button supports all file formats, so that may be causing the error you’re running into.
I shared a code snippet in response to your earlier post about this same issue that seems to download this type of file. Again, I think you could just add a Streamlit button to that script and that would probably give you the same functionality you’re looking for.