C# Conversion of recursive iteration of properties' values for List<> property

I have the following method which I use to iterate through all properties (just properties) in my classes and print on screen their names and values they hold, if any.

        public static void PrintProperties(object obj, int indent = 1)
        {
        if ( obj == null )
            return;
        string indentString = new string (' ', indent);

        Type objType = obj.GetType ();
        PropertyInfo[] properties = objType.GetProperties ();

        foreach ( PropertyInfo property in properties )
        {
            object propValue = property.GetValue (obj, null);
            var elems = propValue as IList;
            if ( elems != null )
            {
                foreach ( var item in elems )
                {
                    PrintProperties (item, indent + 3);
                }
            }
            else
            {
                if ( property.PropertyType.Assembly == objType.Assembly )
                {
                    Console.WriteLine("{0}{1}:", indentString, property.Name);

                    PrintProperties (propValue, indent + 2);
                }
                else
                {
                    Console.WriteLine("{0}{1}: {2}", indentString, property.Name, propValue);
                }
            }
            }

Unfortunately, I change a property in one of my Classes from string to List<string> to accommodate for multiple values that I had to assign there, and now I get error System.Reflection.TargetParameterCountException: 'Parameter count mismatch.' which I don't know how to fix, and most probably is because I have a property that is List. How can i fix so that when I encounter such a property, to list all its values? Could someone help me please?