Adding user online results in failing to add store procedure "GetOnlineUserStatistics"

Following error message occures if you try to jump anyhow. :)

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Error: DotNetNuke.UsersOnline is currently unavailable.
DotNetNuke.Services.Exceptions.ModuleLoadException: The stored procedure 'dbo.GetOnlineUserStatistics' doesn't exist. ---> System.InvalidOperationException: The stored procedure 'dbo.GetOnlineUserStatistics' doesn't exist. at System.Data.SqlClient.SqlCommand.DeriveParameters() at System.Data.SqlClient.SqlCommandBuilder.DeriveParameters(SqlCommand command) at Microsoft.ApplicationBlocks.Data.SqlHelperParameterCache.DiscoverSpParameterSet(SqlConnection connection, String spName, Boolean includeReturnValueParameter, Object[] parameterValues) at Microsoft.ApplicationBlocks.Data.SqlHelperParameterCache.GetSpParameterSetInternal(SqlConnection connection, String spName, Boolean includeReturnValueParameter) at Microsoft.ApplicationBlocks.Data.SqlHelperParameterCache.GetSpParameterSet(String connectionString, String spName, Boolean includeReturnValueParameter) at Microsoft.ApplicationBlocks.Data.SqlHelperParameterCache.GetSpParameterSet(String connectionString, String spName) at Microsoft.ApplicationBlocks.Data.SqlHelper.ExecuteReader(String connectionString, String spName, Object[] parameterValues) at DotNetNuke.Modules.UsersOnline.SqlDataProvider.GetStatistics(Int32 PortalId) at DotNetNuke.Modules.UsersOnline.UsersOnline.Page_Load(Object sender, EventArgs e) --- End of inner exception stack trace ---