Codeeffects Linq Error: E106 The given ruleset does not contain any rules with type System.Xml.Linq.XElement

When I try to the following LINQ Filter

  var productsInfo = from product in productsElement.Descendants("product").Filter(rule)
                           from photo in product.Descendants("photo")
                           from parameter in product.Descendants("parameter")
                           let id = product.Attribute("id")
                           let addr = photo.Attribute("addr")
                           let name = parameter.Attribute("name")
                           select new { ID = id.Value, Addr = addr.Value, Name = name.Value };

I get the following error:

The given ruleset does not contain any rules with type
System.Xml.Linq.XElement, System.Xml.Linq, Version=4.0.0.0, Culture=neutral,
PublicKeyToken=b77a5c561934e089 (Error E106)

My rule:

<?xml version="1.0" encoding="utf-8"?><codeeffects xmlns="http://codeeffects.com/schemas/rule/41" xmlns:ui="http://codeeffects.com/schemas/ui/4"><rule id="09973a56-3d6a-4616-ae1c-40d0d17e95b9" webrule="4.3.6.7" utc="2017-07-24T10:07:08.6346" type="testSlimWebRule.products, testSlimWebRule, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null" eval="true"><definition><condition type="equal"><property name="AllProducts.product.id" /><value type="numeric">1</value></condition></definition><format><lines /></format></rule></codeeffects>

The XML:

 XDocument productsElement = XDocument.Parse(@"<products>
        <AllProducts>
             <product id='1'>
                 <photo addr='1.jpg'/>
                 <parameter name='name'/>
             </product>
             <product id='2'>
                 <photo addr='2.jpg'/>
                 <parameter name='Kenneth'/>
             </product>
          </AllProducts>
        </products> ");

The products class generated using Visual Studio "Insert as XML class":

namespace testSlimWebRule
{
/// <remarks/>
[System.SerializableAttribute()]
[System.ComponentModel.DesignerCategoryAttribute("code")]
[System.Xml.Serialization.XmlTypeAttribute(AnonymousType = true)]
[System.Xml.Serialization.XmlRootAttribute(Namespace = "", IsNullable = false)]
public partial class products
{

    private productsAllProducts allProductsField;

    /// <remarks/>
    public productsAllProducts AllProducts
    {
        get
        {
            return this.allProductsField;
        }
        set
        {
            this.allProductsField = value;
        }
    }
}

/// <remarks/>
[System.SerializableAttribute()]
[System.ComponentModel.DesignerCategoryAttribute("code")]
[System.Xml.Serialization.XmlTypeAttribute(AnonymousType = true)]
public partial class productsAllProducts
{

    private productsAllProductsProduct productField;

    /// <remarks/>
    public productsAllProductsProduct product
    {
        get
        {
            return this.productField;
        }
        set
        {
            this.productField = value;
        }
    }
}

/// <remarks/>
[System.SerializableAttribute()]
[System.ComponentModel.DesignerCategoryAttribute("code")]
[System.Xml.Serialization.XmlTypeAttribute(AnonymousType = true)]
public partial class productsAllProductsProduct
{

    private productsAllProductsProductPhoto photoField;

    private productsAllProductsProductParameter parameterField;

    private byte idField;

    /// <remarks/>
    public productsAllProductsProductPhoto photo
    {
        get
        {
            return this.photoField;
        }
        set
        {
            this.photoField = value;
        }
    }

    /// <remarks/>
    public productsAllProductsProductParameter parameter
    {
        get
        {
            return this.parameterField;
        }
        set
        {
            this.parameterField = value;
        }
    }

    /// <remarks/>
    [System.Xml.Serialization.XmlAttributeAttribute()]
    public byte id
    {
        get
        {
            return this.idField;
        }
        set
        {
            this.idField = value;
        }
    }
}

/// <remarks/>
[System.SerializableAttribute()]
[System.ComponentModel.DesignerCategoryAttribute("code")]
[System.Xml.Serialization.XmlTypeAttribute(AnonymousType = true)]
public partial class productsAllProductsProductPhoto
{

    private string addrField;

    /// <remarks/>
    [System.Xml.Serialization.XmlAttributeAttribute()]
    public string addr
    {
        get
        {
            return this.addrField;
        }
        set
        {
            this.addrField = value;
        }
    }
}

/// <remarks/>
[System.SerializableAttribute()]
[System.ComponentModel.DesignerCategoryAttribute("code")]
[System.Xml.Serialization.XmlTypeAttribute(AnonymousType = true)]
public partial class productsAllProductsProductParameter
{

    private string nameField;

    /// <remarks/>
    [System.Xml.Serialization.XmlAttributeAttribute()]
    public string name
    {
        get
        {
            return this.nameField;
        }
        set
        {
            this.nameField = value;
        }
    }
}


}

The ASP.net part:

  <rule:RuleEditor ID="ruleEditor" runat="server"
                Mode="Filter"
                ShowToolBar="false"
                SourceAssembly="testSlimWebRule"
                SourceType="testSlimWebRule.products" />

I have tried several combinations of setting the filter, but just can't find a solution.

What am I missing?