deploy a report to report server in SQL 2k5

I have made a report using Business Intelligence Development Studio in
SQL2005. When I deploy that report the report server, I got the error:

****************************************************************************************************************************
A connection cannot not be made to the report server
http://servername.

Addition Information:

The server committed a protocol violation. Section=ResponseHeader detail=CR
must be followed by LF (System.Web.Service)

******************************************************************************************************************************************************

Then I use IE to open http://servername/reportserver , I get the following
message:



Server Error in '/ReportServer' Application.
--------------------------------------------------------------------------------

Runtime Error
Description: An application error occurred on the server. The current custom
error settings for this application prevent the details of the application
error from being viewed remotely (for security reasons). It could, however,
be viewed by browsers running on the local server machine.

Details: To enable the details of this specific error message to be viewable
on remote machines, please create a <customErrors> tag within a "web.config"
configuration file located in the root directory of the current web
application. This <customErrors> tag should then have its "mode" attribute
set to "Off".

<!-- Web.Config Configuration File -->

<configuration>
<system.web>
<customErrors mode="Off"/>
</system.web>
</configuration>

Notes: The current error page you are seeing can be replaced by a custom
error page by modifying the "defaultRedirect" attribute of the application's
<customErrors> configuration tag to point to a custom error page URL.

<!-- Web.Config Configuration File -->

<configuration>
<system.web>
<customErrors mode="RemoteOnly" defaultRedirect="mycustompage.htm"/>
</system.web>
</configuration>

In fact, I used report services configuration manager and clicked new button for both creating report server and report manager virtual directory. But it failed and gives an error: "The virtual directory cannot be created. The previously set virtual directory will still be used."
"ReportServicesConfigUI.WMIProvider.WMIProviderException: The virtual directory specified already exists. Specify a different name.at ReportServicesConfigUI.WMIProvider.RSReportServerAdmin.CreateVirtualDirectory(String virtualDirectory, String path)"
Please help how to proceed. Thanks.