I have build errors on p. 39 with three items--Count, Clear, and RemoveAt.

Message reads: "C:\BookManager\EnterpriseObjects\EnterpriseObject s in VB\EnterpriseCounterCollection.vb(49): 'Public Overrides ReadOnly Property Count() As Integer' cannot override 'Public Overridable NotOverridable ReadOnly Property Count() As Integer' because it is declared 'NotOverridable'."

Anyone else encounter this error?

I'm using VS2003--is this an issue?