I am unable to convert .csv files to .gpx no matter what I do. Is there a standard format required for the .csv file in order to convert, and if so, what is it??
This may help others with similar issues. I have traced my problem to using the Apple built-in app, TextEdit, to edit and save .csv and.gpx files. I finally installed BBEdit and when I looked at these files, TextEdit inserts all kinds of formatting stuff into their files that blows up the converters and display apps out there. When I cleaned all of that out with BBEdit, they convert and display just fine.
Take home message: Do not use TextEdit to edit .csv and .gpx files! Use an editor like BBEdit that is a basic text editor for programming and does not insert any formatting code into the file.