Problem with deploying using Capistrano from Windows

You can issue the chmod after a code update.

You should have a task (or you can create it) called
after_code_update, that automatically runs after it updates the code
into a releases dir -- where you can issue the chmod command:

desc "Tasks to execute after code update"
task :after_update_code, :roles => [:app, :db] do
  # fix permissions
  run "chmod +x #{release_path}/script/spawner"
  run "chmod +x #{release_path}/script/spawner"

hope that helps,