Capistrano upload fails with incorrect arguments error?

Question

I'm running

upload('bin/rvm_install.sh','~/rvm_install.sh')

in my Capistrano deploy script. And it's spitting out the following error:

capistrano-2.14.2/lib/capistrano/configuration/namespaces.rb:110:in `block in define_task': wrong number of arguments (2 for 0) (ArgumentError)

Why is this happening?

Answer 1

Changing

upload('bin/rvm_install.sh','~/rvm_install.sh')

to

top.upload('bin/rvm_install.sh','~/rvm_install.sh')

solved my problem.