SolarAnywhere file format has changed so Solar Resource File Converter doesn't work with latest versions:

This is due to the addition of new wind fields that were added with the SA V3.8 launch last summer. I have included a V3.8 example file for your reference. Now, the DNI column is reading data from Wind Direction, and Wspd is reading data from WindGust.

solaranywhere-feb-2025.zip