I created a new rails project by `rails new app` . Then the command prompt showed the creation of a few files and then is displayed `run bundle install` and showed some stuff after that.

However, then I changed the Gemfile to add some new gems and ran `bundle install` again to install those gems but I get `invalid argument` error. So, how do I run bundle install?

Rails version : 3.2.1,
Ruby version : 1.9.3

Here's the Gemfile

```
source 'https://rubygems.org'

gem 'rails', '3.2.1'

# Bundle edge Rails instead:
# gem 'rails', :git => 'git://github.com/rails/rails.git'

gem 'sqlite3'

# Gems used only for assets and not required
# in production environments by default.
group :assets do
  gem 'sass-rails',   '~> 3.2.3'
  gem 'coffee-rails', '~> 3.2.1'

  # See https://github.com/sstephenson/execjs#readme for more supported runtimes
  # gem 'therubyracer'

  gem 'uglifier', '>= 1.0.3'
end

group :development do
  gem 'rspec-rails', '2.0.0.beta.18'
end

group :test do
    gem 'rspec', '2.0.0.beta.18'
end

gem 'jquery-rails'

```

**Update**

As is turns out I had installed something called MoSync some time back and it probably came with a bundle command with it. So, when I was typing `bundle install`, it was trying to run something else but couldn't find a valid argument.

It became clear when I typed just `bundle` in the powershell and saw this:

```
MAUtil::MAFS Bundle tool

This tool is used to build a binary image of a folder on a desktop computer.

Usage:
bundle <parameters>

Parameters:
  -in <input file or folder> the input files or folders to add to the
                             image (multiple -in directives may be added).
  -out <output file>         the name of the image to be created (only one).
  -toUpper/-toLower          change case of all file names to upper or lower
                             case.

Example:
  bundle -in data -out anotherworld.bun -toLower

```