Replication process failed for items with exit status 65280

I am new to MySQL's ReplicationImplementation. The Ruby source code I am investigating is as below:

(last_item_number..ConfigItem::NUMBER_OF_ITEMS).collect do |i|
type = "ConfigItem#{i}"
existing = Item.all( :conditions => { :type => type } )
...
TableReplicationImplementation.replicate(Item) if $items_updated  

When executing, at the line of "TableReplicationImplementation.replicate(Item) if $items_updated", this error occurred: `replicate_from': replication process failed for items with exit status 65280 (StandardError).

If anyone has hints for fixing this error, please advise.