Hi Viv, I trapped the error and the code is -2147467259 which means E_FAIL which means unspecified error - so no closer to solving it :-(

Edit
Got this from the Exception.GetType()

{Name = "COMException" FullName = "System.Runtime.InteropServices.COMException"}
    [System.RuntimeType]: {Name = "COMException" FullName = "System.Runtime.InteropServices.COMException"}
    base: {Name = "COMException" FullName = "System.Runtime.InteropServices.COMException"}
    Assembly: {mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089}
    AssemblyQualifiedName: "System.Runtime.InteropServices.COMException, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"
    Attributes: Public | Serializable | BeforeFieldInit
    BaseType: {Name = "ExternalException" FullName = "System.Runtime.InteropServices.ExternalException"}
    ContainsGenericParameters: false
    DeclaringMethod: 'ex.GetType().DeclaringMethod' threw an exception of type 'System.InvalidOperationException'
    DeclaringType: null
    FullName: "System.Runtime.InteropServices.COMException"
    GenericParameterAttributes: 'ex.GetType().GenericParameterAttributes' threw an exception of type 'System.InvalidOperationException'
    GenericParameterPosition: 'ex.GetType().GenericParameterPosition' threw an exception of type 'System.InvalidOperationException'
    GenericTypeArguments: {System.Type[0]}
    GUID: {07f94112-a42e-328b-b508-702ef62bcc29}
    HasElementType: false
    IsAbstract: false
    IsAnsiClass: true
    IsArray: false
    IsAutoClass: false
    IsAutoLayout: true
    IsByRef: false
    IsClass: true
    IsCOMObject: false
    IsConstructedGenericType: false
    IsContextful: false
    IsEnum: false
    IsExplicitLayout: false
    IsGenericParameter: false
    IsGenericType: false
    IsGenericTypeDefinition: false
    IsImport: false
    IsInterface: false
    IsLayoutSequential: false
    IsMarshalByRef: false
    IsNested: false
    IsNestedAssembly: false
    IsNestedFamANDAssem: false
    IsNestedFamily: false
    IsNestedFamORAssem: false
    IsNestedPrivate: false
    IsNestedPublic: false
    IsNotPublic: false
    IsPointer: false
    IsPrimitive: false
    IsPublic: true
    IsSealed: false
    IsSecurityCritical: false
    IsSecuritySafeCritical: false
    IsSecurityTransparent: true
    IsSerializable: true
    IsSpecialName: false
    IsUnicodeClass: false
    IsValueType: false
    IsVisible: true
    MemberType: TypeInfo
    Module: {CommonLanguageRuntimeLibrary}
    Namespace: "System.Runtime.InteropServices"
    ReflectedType: null
    StructLayoutAttribute: {System.Runtime.InteropServices.StructLayoutAttribute}
    TypeHandle: {System.RuntimeTypeHandle}
    TypeInitializer: null
    UnderlyingSystemType: {Name = "COMException" FullName = "System.Runtime.InteropServices.COMException"}

Isn't it wonderful ?