I am getting below error when trying to set the peer top peer replication

TITLE: New Publication Wizard
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SQL Server could not create publication 'pub_default'.

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ADDITIONAL INFORMATION:

An exception occurred while executing a Transact-SQL statement or batch. (Microsoft.SqlServer.ConnectionInfo)

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Could not find stored procedure ''.
Changed database context to 'AdventureWorks2008R2'.
Warning: The "immediate_sync" property for publication "pub_default" has been changed to "true" because it is required by Peer-To-Peer.
Warning: The "allow_initialize_from_backup" property for publication "pub_default" has been changed to "true" because it is required by Peer-To-Peer. (Microsoft SQL Server, Error: 2812)

For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft%20SQL%20Server&ProdVer=11.00.2100&EvtSrc=MSSQLServer&EvtID=2812&LinkId=20476

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BUTTONS:

OK
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Thanks