I have verified with multiple XML validators to ensure the document is sound.

In one area of the document, anything after it the C# debugger will say the first character of the next line (after indent; did try having the entire document with none as well) is not formatted correctly:

System.InvalidOperationException: There is an error in XML document (11, 5). ---> System.FormatException: Input string was not in a correct format.

Here is the reader/deserialize part of the code:

XmlSerializer serializer = new XmlSerializer(typeof(VehicleModelInfo));
            using (StreamReader reader = new StreamReader(filePath, Encoding.UTF8))
            {
                try
                {
                    
                    return (VehicleModelInfo) serializer.Deserialize(reader);
                }
                catch (System.InvalidOperationException e)
                {
                    Console.WriteLine(e);

            [...]

This is the problematic line:

<PovCameraVerticalAdjustmentForRollCage value="0.000000" />

It, along with the other elements in the XML are declared:

     [XmlElement("PovCameraVerticalAdjustmentForRollCage")]
        public float PovCameraVerticalAdjustmentForRollCage { get; set; }

I cannot figure out why this one (there are many other float values in the XML) in particular is not behaving.

Any advice would be appreciated.