how to handle error in this

[Mr. SweatyFinger]

How do i make this a "pretty" error?
at what point in the process to I catch it?
Server Error in '/' Application.
--------------------------------------------------------------------------------

Parser Error
Description: An error occurred during the parsing of a resource required to
service this request. Please review the following specific parse error
details and modify your source file appropriately.

Parser Error Message: The process cannot access the file
'd:\hosting\xxx\controls\adReview.ascx' because it is being used by another
process.

Source Error:


Line 1: <%@ Page Language="VB" MasterPageFile="~/snowList.master"
AutoEventWireup="false" CodeFile="adsReview.aspx.vb"
Inherits="posting_adReview" title="Untitled Page" %>
Line 2:
Line 3: <%@ Register Src="../controls/adReview.ascx" TagName="adsReview"
TagPrefix="uc1" %>
Line 4: <asp:Content ID="Content1" ContentPlaceHolderID="header"
Runat="Server">
Line 5: <uc1:adReview id="AdReview1" runat="server">

 

[Guest]

How do i make this a "pretty" error?
at what point in the process to I catch it?
Server Error in '/' Application.
---------------------------------------------------------------------------­-----

Parser Error
Description: An error occurred during the parsing of a resource required to
service this request. Please review the following specific parse error
details and modify your source file appropriately.

Parser Error Message: The process cannot access the file
'd:\hosting\xxx\controls\adReview.ascx' because it is being used by another
process.

Source Error:

Line 1: <%@ Page Language="VB" MasterPageFile="~/snowList.master"
AutoEventWireup="false" CodeFile="adsReview.aspx.vb"
Inherits="posting_adReview" title="Untitled Page" %>
Line 2:
Line 3: <%@ Register Src="../controls/adReview.ascx" TagName="adsReview"
TagPrefix="uc1" %>
Line 4: <asp:Content ID="Content1" ContentPlaceHolderID="header"
Runat="Server">
Line 5: <uc1:adReview id="AdReview1" runat="server">

Because of parent path in "../controls/adReview.ascx", I guess.