# Error on "cap setup"

**URL:** <https://www.ruby-forum.com/t/error-on-cap-setup/92200>\
**Category:** Rails\
**Created:** [April 17, 2007, 1:29am UTC](https://www.ruby-forum.com/t/error-on-cap-setup/92200 "2007-04-17T01:29:59Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![preston](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/p/a587f6/32.png) [@preston](https://www.ruby-forum.com/u/preston)\
**Post date:** [April 17, 2007, 1:29am UTC](https://www.ruby-forum.com/t/error-on-cap-setup/92200/1 "2007-04-17T01:29:59Z")

</div>

Capistrano is throwing an ugly error after SSH authentication with my  
application server on both ‘cap setup’ and ‘cap deploy’. It’s  
particularly strange because I haven’t encountered this on any other  
projects, and am using a nearly identical (and near stock) deploy.rb  
file. Does this look familiar to anyone?

/opt/local/lib/ruby/gems/1.8/gems/net-ssh-1.0.10/lib/net/ssh/  
transport/packet-stream.rb:173:in `update': data must not be empty (ArgumentError) from /opt/local/lib/ruby/gems/1.8/gems/net-ssh-1.0.10/lib/ net/ssh/transport/packet-stream.rb:173:in`get’  
from /opt/local/lib/ruby/gems/1.8/gems/net-ssh-1.0.10/lib/  
net/ssh/transport/packet-stream.rb:147:in `synchronize' from /opt/local/lib/ruby/gems/1.8/gems/net-ssh-1.0.10/lib/ net/ssh/transport/packet-stream.rb:147:in`get’  
from /opt/local/lib/ruby/gems/1.8/gems/needle-1.3.0/lib/  
needle/lifecycle/proxy.rb:60:in ` __send__' from /opt/local/lib/ruby/gems/1.8/gems/needle-1.3.0/lib/ needle/lifecycle/proxy.rb:60:in`method\_missing’  
from /opt/local/lib/ruby/gems/1.8/gems/net-ssh-1.0.10/lib/  
net/ssh/transport/session.rb:247:in `wait_for_message' from /opt/local/lib/ruby/gems/1.8/gems/net-ssh-1.0.10/lib/ net/ssh/transport/session.rb:242:in`loop’  
from /opt/local/lib/ruby/gems/1.8/gems/net-ssh-1.0.10/lib/  
net/ssh/transport/session.rb:242:in `wait_for_message' ... 23 levels... from /opt/local/lib/ruby/gems/1.8/gems/capistrano-1.4.1/lib/ capistrano/cli.rb:12:in`execute!’  
from /opt/local/lib/ruby/gems/1.8/gems/capistrano-1.4.1/bin/  
cap:11  
from /opt/local/bin/cap:16:in `load’  
from /opt/local/bin/cap:16

---

<div class="post-metadata">

**Author:** ![preston](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/p/a587f6/32.png) [@preston](https://www.ruby-forum.com/u/preston)\
**Post date:** [April 27, 2007, 1:08pm UTC](https://www.ruby-forum.com/t/error-on-cap-setup/92200/2 "2007-04-27T13:08:24Z")

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Ask your question there …

[http://groups.google.com/group/capistrano](http://groups.google.com/group/capistrano)

Cheers