WSRP (register provider) error

Hello,I try to register a provider to my portal (10.1.4)
i deploy the war succesfull and now i testing this url to browser eg http://hostname:port/maping url/portlets?WSDL
I see the xml succesfully...
But when i try to register to portal i take the follow error:
An error occurred during the call to the WSRP Provider: java.rmi.RemoteException: HTTP transport error: java.lang.NullPointerException; nested exception is:
HTTP transport error: java.lang.NullPointerException
com.sun.xml.rpc.client.ClientTransportException: HTTP transport error: java.lang.NullPointerException
Java stack trace from root exception:
java.lang.NullPointerException
at HTTPClient.URI.<init>(URI.java)
at HTTPClient.URI.<init>(URI.java)
at oracle.webdb.wsrp.client.HTTPClientTransport.invoke(Unknown Source)
at com.sun.xml.rpc.client.StreamingSender._send(StreamingSender.java:82)
at oracle.webdb.wsrp.WSRP_v1_ServiceDescription_PortType_Stub.getServiceDescription(WSRP_v1_ServiceDescription_PortType_Stub.java:63)
at oracle.webdb.wsrp.client.design.v1.OraWSRP_v1_ServiceDescription_PortType.getServiceDescription(Unknown Source)
. (WWC-43273)
***I run the wsrp -install optionaly to oc4j portal****
Any solution?

Check Note 335911.1 on metalink - you might be missing a few essential patches.

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    Hi,
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    http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=322792&SiteID=1
    https://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=763875&SiteID=1
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    http://blogs.msdn.com/sql_protocols/archive/2006/09/30/SQL-Server-2005-Remote-Connectivity-Issue-TroubleShooting.aspx
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    http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=348662&SiteID=1
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    b. User specified wrong server in their connection string, as described in the forum discussion, "MSSQLSERVER" is an invalid instance name. Remember, when you connect to default instance, <machinename> could be best representitive for the instance, when you connect to a named instance such as sqlexpress, you should specify <machinename>\<instancename> as data source in your connection string.
     V. Other reasons such as incorrect security context.
    Check out: http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=192622&SiteID=1
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    b. If you can make basic conection, but still face the error, then there must be something that server reject the connection or client close the connection for some reason.
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    Here are some blogs which could be helpful: just follow the basic connectivity troubleshooting guidelines on the SQL Protocols blog, see:
    SQL Server 2005 Connectivity Issue Troubleshoot - Part I
    http://blogs.msdn.com/sql_protocols/archive/2005/10/22/483684.aspx
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    SQL Server 2005 Connectivity Issue Troubleshoot - Part II
    http://blogs.msdn.com/sql_protocols/archive/2005/10/29/486861.aspx
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