403 nil error

[tresero]

S3 command failed:
list_bucket max-keys 200 prefix share/Agent Proposals & Quotes & Forms/Master Agents/W Lange & Co/Wet Seal/ delimiter /
With result 403 Forbidden
S3 ERROR: #<Net::HTTPForbidden:0xb77f28c8>
./s3sync.rb:289:in `+': can't convert nil into Array (TypeError)
        from ./s3sync.rb:289:in `s3TreeRecurse'
        from ./s3sync.rb:332:in `s3TreeRecurse'
        from ./s3sync.rb:313:in `each'
        from ./s3sync.rb:313:in `s3TreeRecurse'
        from ./s3sync.rb:332:in `s3TreeRecurse'
        from ./s3sync.rb:313:in `each'
        from ./s3sync.rb:313:in `s3TreeRecurse'
        from ./s3sync.rb:332:in `s3TreeRecurse'
         ... 12 levels...
        from ./thread_generator.rb:76:in `initialize'
        from ./s3sync.rb:266:in `new'
        from ./s3sync.rb:266:in `main'
        from ./s3sync.rb:724