help me

[Siva]

Hi all

I need an urgent help.A lot of times i keep getting the following
error even after replacing the bin with new dlls

Please suggest some ideas

Thanks
Emperor
Server Error in '/Corporate' Application.
--------------------------------------------------------------------------------

Configuration Error
Description: An error occurred during the processing of a
configuration file required to service this request. Please review the
specific error details below and modify your configuration file
appropriately.

Parser Error Message: Unable to load file 'Corporate'.

Source Error:
Line 197: <add assembly="System.Drawing,
Version=1.0.3300.0, Culture=neutral,
PublicKeyToken=b03f5f7f11d50a3a"/>
Line 198: <add assembly="System.EnterpriseServices,
Version=1.0.3300.0, Culture=neutral,
PublicKeyToken=b03f5f7f11d50a3a"/>
Line 199: <add assembly="*"/>
Line 200: </assemblies>
Line 201:
Source File: c:\winnt\microsoft.net\framework\v1.0.3705\Config\ machine.config
Line: 199
--------------------------------------------------------------------------------
Version Information: Microsoft .NET Framework Version:1.0.3705.288;
ASP.NET Version:1.0.3705.288