Cannot create remote file.filepart' c#

I am trying to use the .NET assembly and following the instructions in the documentation.
https://winscp.net/eng/docs/library_session_getfiles#example

I always get "Cannot create remote file '/root/data/filename.csv.filepart'."

When I manually try this using the WinSCP client, I can successfully upload the same document. I am using the same sessionOptions and transferOptions. I don't what I am missing.

Any suggestions?

Please attach a complete session log file both from .NET and GUI.

I'd like to disable the resume feature using an INI file, but as I haven't used an INI before and I can't find much in the way of documentation for these files I'd like to check here that I'm using it correctly.

karenlucy wrote:

I'd like to disable the resume feature using an INI file, but as I haven't used an INI before and I can't find much in the way of documentation for these files I'd like to check here that I'm using it correctly.

You should better use TransferOptions.ResumeSupport:
https://winscp.net/eng/docs/library_transferoptions