Unknown server tag 'FBA:ChangePasswordWebPart'


i have added the change password web part in my solution i am able to get the email once i have fill membership request web part . when i amtring to opne the link to change password i am getting the below error
Parser Error Message: Unknown server tag 'FBA:ChangePasswordWebPart'.

how to fix this

Line 19: <asp:Content ID="Content5" ContentPlaceHolderID="PlaceHolderMain" runat="server">
Line 20: <FBA:ChangePasswordWebPart frametype="None" chrometype="None" id="PasswordWebPart" runat="server"
Line 21: changepasswordtitletext="" />
Line 22: </asp:Content>

I'm guessing you're missing the register tag:

<%@ Register TagPrefix="FBA" Namespace="Visigo.Sharepoint.FormsBasedAuthentication"
Assembly="Visigo.Sharepoint.FormsBasedAuthentication, Version=, Culture=neutral, PublicKeyToken=9dba9f460226d31d" %>