How to prevent Bower from hanging up when installing angular-ui-tree?

Question

I've been trying to install angular-ui-tree using bower version 1.8.0, but it keeps hanging up on me.

I've tried the following commands:

• bower install angular-ui-tree
• bower install angular-ui-tree --save
• bower install angular-ui-tree --save --verbose
• bower install angular-ui-tree --verbose

Verbose doesn't print a stack trace, however all commands above print the info of already installed packages.

I've also tried using bower init or restoring previous versions of bower.json, but to no avail.

The original bower.json file:

{
  "name": "meten",
  "version": "0.0.1",
  "dependencies": {
    "angular": "*",
    "bootstrap": "*",
    "angular-animate": "*",
    "angular-bootstrap": "*",
    "angular-cookies": "*",
    "angular-resource": "*",
    "angular-route": "*",
    "angular-sanitize": "*",
    "angular-smart-table": "*",
    "angular-touch": "*",
    "angular-strap": "*",
    "angular-nvd3": "*",
    "papaparse": "*",
    "components-font-awesome": "^4.7.0"
  },
  "devDependencies": {
    "angular-mocks": "*"
  },
  "appPath": "app",
  "moduleName": "metenApp",
  "overrides": {
    "bootstrap": {
      "main": [
        "less/bootstrap.less",
        "dist/css/bootstrap.css",
        "dist/js/bootstrap.js"
      ]
    }
  }
}

What can I do to fix bower?