Vista - Error AG0017? What is the problem?

Hello,

I have this message:

Error 1
D:\KrystalFx\WinFS\Schema\Krystal.PartnerSchema\obj\Debug\Schema.xml(2,109)
: error AG0017: Alias (Krystal.PartnerSchema) is invalid. Alias cannot be
qualified. Krystal.PartnerSchema

Where is my error?

Regards

Schema.xml :
<?xml version="1.0"?>

<Schema xmlns="http://schemas.microsoft.com/winfs/2003/09/schema"

Version="0.1.0"

VersioningClass="Library"

Alias="Krystal.PartnerSchema"

Namespace="Krystal.PartnerSchema"

PublicKeyToken="51d83c98f252408e"

>

<Using Alias="Storage" Namespace="System.Storage" Version="0.1.0"
PublicKeyToken="f45b95b0f79f4fbe"/>

<Using Alias="Contacts" Namespace="System.Storage.Contacts" Version="0.1.0"
PublicKeyToken="f45b95b0f79f4fbe" />

<Using Version="0.1.0" Alias="Core" Namespace="System.Storage.Core"
PublicKeyToken="f45b95b0f79f4fbe" />

<EntityType Name="Partner" BaseType="Contacts.Organization">

<Property Name="TrustedMailDomain" Type="Storage.String" Size="64"
Nullable="false" ChangeUnit="Storage.Item.Item" />

</EntityType>

<EntityType Name="Customer" BaseType="Partner">

<Property Name="AccountNumber" Type="Storage.String" Size="64"
Nullable="false" ChangeUnit="Storage.Item.Item" />

</EntityType>

<EntityType Name="Provider" BaseType="Partner">

<Property Name="AccountNumber" Type="Storage.String" Size="64"
Nullable="false" ChangeUnit="Storage.Item.Item" />

</EntityType>

</Schema>