Oma problem

Oma problem
When i try to open oma with http:\\nameserver\oma on the browser shows a 
error, in the event viewer i find un error for echenge OMA "unable to load 
Omanative.dll" the error is present in win2003 SBS and exchange SBS 2003 
also with sp1 then SP2, i have tried to disintall IIS and reinstall it, same 
thing for exchange but the problem is
remains.
The error is knows in internet but i I have not found the solution
Someone can help me
Emanuele Gostoli
This is the error in event viewe
Unable to load OmaNative.dll

Origine: Microsoft.Exchange.OMA.UserInterface

Trace stack:

at Microsoft.Exchange.OMA.UserInterface.Global.HrGetExchangeDomain(String
mbPath, IntPtr& pDomain)

at Microsoft.Exchange.OMA.UserInterface.Global.get_ExchangeDomain()

at Microsoft.Exchange.OMA.UserInterface.Global.Session_Start(Object sender,
EventArgs e)

Messaggio: Generata eccezione di tipo
Microsoft.Exchange.OMA.DataProviderInterface.ProviderException.

EventMessage:

UserMessage: Errore di sistema durante l'elaborazione della richiesta.
Riprovare. Se il problema persiste, contattare l'amministratore.

Origine: Microsoft.Exchange.OMA.UserInterface

Traccia stack:

at Microsoft.Exchange.OMA.UserInterface.Global.Session_Start(Object sender,
EventArgs e)

at System.Web.SessionState.SessionStateModule.RaiseOnStart(EventArgs e)

at System.Web.SessionState.SessionStateModule.CompleteAcquireState()

at System.Web.SessionState.SessionStateModule.BeginAcquireState(Object
source, EventArgs e, AsyncCallback cb, Object extraData)

at
System.Web.AsyncEventExecutionStep.System.Web.HttpApplication+IExecutionStep.Execute()

at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean&
completedSynchronously)
date: Mon, 13 Mar 2006 10:06:05 +0100 author: egostoli