2 sets against non-default buckets fail.

couchbase-1.1.2.gem
libcouchbase 1.0.2 (latest brew version)

require 'rubygems'
require 'couchbase'

cb1 = Couchbase.new("http://10.4.2.4:8091/pools/default/buckets/bucket1")
cb1.quiet = false

cb1.set('key','data', :ttl => 0)
cb1.set('key2','data', :ttl => 0)

`set': failed to schedule set request (error=0x0f) (Couchbase::Error::Network)

This works if the bucket is set to default.