Dear Joe,
Please open the file with a text editor and make sure there are no commas at the end of rows.
Also, be sure that your data starts in Row 2 (Row 1 is for header information). The file should have a total of 8760 x 4 + 1 rows.
If your file still does not work, please attach a copy of it to your original post, and I will try to help troubleshoot it.
Best regards,
Paul.