Data replication between child and parent SMP servers is erratic, inconsistent, or failing completely.
Length of LOB data (#####) to be replicated exceeds configured maximum 65536
Where '#####' can be any number higher than 65536
LOB stands for 'Large Object'. The Large Object data that is being replicated is larger than the maximum set in SQL manager.
This is a MS-SQL server setting that needs to be changed in order to handle the amount of data that is being replicated.
Please refer to MSDN article:
How to: Configure the max text repl size Option (SQL Server Management Studio)