unable to configure the performance point services in share point 2010

Hi all,

I am facing the following error when configuring the performance point service application with the service account.

Log Name:      Application
Source:        Microsoft-SharePoint Products-PerformancePoint Service
Date:          12/7/2010 10:57:38 PM
Event ID:      4
Task Category: PerformancePoint Services
Level:         Error
Keywords:     
User:          kesava-PC\kesava
Computer:      kesava-PC
Description:
An unexpected error occurred.  Error 8429.

Exception details:
System.IO.FileLoadException: Could not load file or assembly 'BCMLogon, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. Failed to grant permission to execute. (Exception from HRESULT: 0x80131418)
File name: 'BCMLogon, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null' ---> System.Security.Policy.PolicyException: Execution permission cannot be acquired.
   at System.Security.SecurityManager.ResolvePolicy(Evidence evidence, PermissionSet reqdPset, PermissionSet optPset, PermissionSet denyPset, PermissionSet& denied, Boolean checkExecutionPermission)
   at System.Security.SecurityManager.ResolvePolicy(Evidence evidence, PermissionSet reqdPset, PermissionSet optPset, PermissionSet denyPset, PermissionSet& denied, Int32& securitySpecialFlags, Boolean checkExecutionPermission)
   at Microsoft.PerformancePoint.Scorecards.ServerCommon.NativeMethods.LogonUser(String lpszUsername, String lpszDomain, IntPtr lpszPassword, Int32 dwLogonType, Int32 dwLogonProvider, IntPtr& phToken)
   at Microsoft.PerformancePoint.Scorecards.ServerCommon.ConnectionContextHelper.Logon(ICredentialProvider credentials)
   at Microsoft.PerformancePoint.Scorecards.ServerCommon.ConnectionContextHelper.SetContext(ConnectionContext connectionContext, ICredentialProvider credentials)

Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Microsoft-SharePoint Products-PerformancePoint Service" Guid="{A7CD5295-CBBA-4DCA-8B67-D5BE061B6FAE}" />
    <EventID>4</EventID>
    <Version>14</Version>
    <Level>2</Level>
    <Task>1</Task>
    <Opcode>0</Opcode>
    <Keywords>0x4000000000000000</Keywords>
    <TimeCreated SystemTime="2010-12-07T17:27:38.537956200Z" />
    <EventRecordID>73440</EventRecordID>
    <Correlation ActivityID="{F9F2D07D-93E2-40CA-894E-FA41D47D9953}" />
    <Execution ProcessID="6696" ThreadID="4284" />
    <Channel>Application</Channel>
    <Computer>kesava-PC</Computer>
    <Security UserID="S-1-5-21-602462370-1091421275-4091790504-1000" />
  </System>
  <EventData>
    <Data Name="int1">8429</Data>
    <Data Name="string2">System.IO.FileLoadException: Could not load file or assembly 'BCMLogon, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. Failed to grant permission to execute. (Exception from HRESULT: 0x80131418)
File name: 'BCMLogon, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null' ---&gt; System.Security.Policy.PolicyException: Execution permission cannot be acquired.
   at System.Security.SecurityManager.ResolvePolicy(Evidence evidence, PermissionSet reqdPset, PermissionSet optPset, PermissionSet denyPset, PermissionSet&amp; denied, Boolean checkExecutionPermission)
   at System.Security.SecurityManager.ResolvePolicy(Evidence evidence, PermissionSet reqdPset, PermissionSet optPset, PermissionSet denyPset, PermissionSet&amp; denied, Int32&amp; securitySpecialFlags, Boolean checkExecutionPermission)
   at Microsoft.PerformancePoint.Scorecards.ServerCommon.NativeMethods.LogonUser(String lpszUsername, String lpszDomain, IntPtr lpszPassword, Int32 dwLogonType, Int32 dwLogonProvider, IntPtr&amp; phToken)
   at Microsoft.PerformancePoint.Scorecards.ServerCommon.ConnectionContextHelper.Logon(ICredentialProvider credentials)
   at Microsoft.PerformancePoint.Scorecards.ServerCommon.ConnectionContextHelper.SetContext(ConnectionContext connectionContext, ICredentialProvider credentials)

</Data>
  </EventData>
</Event>

Could you please help me in proceeding further.