Webstorm cannot recognize node Express both on Windows and Ubuntu - node.js

Question

environment:
Webstorm v10.0.4
Node.js v0.12.5
Windows 8.1
Ubuntu 14.04
Just as the image showing below, on the pannel of creating 'Node.js Express App', Webstorm only finds Node and npm, but can not recognize Express.
Of course Express is installed globally, and I can create a Express project via express-generator on terminal.
➜ ~ npm -g list -depth=0
/usr/local/lib
├── bower#1.4.1
├── cheerio#0.19.0
├── express#4.13.0
├── express-generator#4.12.4
├── npm#2.11.2
└── nrm#0.2.5
And the idea.log as follow, not detail messages:
[ 0] INFO - #com.intellij.idea.Main - ------------------------------------------------------ IDE STARTED ------------------------------------------------------
[ 93] INFO - #com.intellij.idea.Main - IDE: WebStorm (build #WS-141.1550, 12 Jun 2015 00:00)
[ 93] INFO - #com.intellij.idea.Main - OS: Windows 8 (6.2, x86)
[ 93] INFO - #com.intellij.idea.Main - JRE: 1.8.0_40-b26 (Oracle Corporation)
[ 93] INFO - #com.intellij.idea.Main - JVM: 25.40-b25 (Java HotSpot(TM) Server VM)
[ 109] INFO - #com.intellij.idea.Main - JVM Args: -Xms128m -Xmx512m -XX:MaxPermSize=250m -XX:ReservedCodeCacheSize=150m -XX:+UseConcMarkSweepGC -XX:SoftRefLRUPolicyMSPerMB=50 -ea -Dsun.io.useCanonCaches=false -Djava.net.preferIPv4Stack=true -Djb.vmOptions=D:\WebStorm 10.0.4\bin\WebStorm.exe.vmoptions -Xbootclasspath/a:D:\WebStorm 10.0.4\lib\boot.jar -Didea.platform.prefix=WebStorm -Didea.no.jre.check=true -Didea.paths.selector=WebStorm10
[ 281] INFO - #com.intellij.idea.Main - JNA library loaded (32-bit) in 172 ms
[ 296] INFO - penapi.util.io.win32.IdeaWin32 - Native filesystem for Windows is operational
[ 328] INFO - #com.intellij.idea.Main - Using "FocusKiller" library to prevent focus stealing.
[ 1920] INFO - llij.ide.plugins.PluginManager - Cannot find optional descriptor js-nashorn-support.xml
[ 3094] INFO - llij.ide.plugins.PluginManager - 48 plugins initialized in 1909 ms
[ 3110] INFO - llij.ide.plugins.PluginManager - Loaded bundled plugins: ASP (0.1), AngularJS (141.1550), CSS Support, CVS Integration (11), CoffeeScript (2.0), Cucumber.js (141.1550), Dart (141.1550), EJS (141.1550), EditorConfig (1.0), File Watchers (141.1550), Gherkin (999.999), Git Integration (8.1), GitHub, HAML, HTML Tools (2.0), Handlebars/Mustache (141.1550), IDEA CORE, IntelliLang (8.0), JSTestDriver Plugin (141.1550), Jade (141.1550), Java Server Pages Integration (1.0), JavaScript Debugger (1.0), JavaScript Intention Power Pack (0.9.4), JavaScript Support (1.0), Karma (141.1550), LESS support, LiveEdit (999.0), Meteor (141.1550), NodeJS (141.1550), Perforce Integration (2.0), PhoneGap/Cordova Plugin (141.1550), Polymer & Web Components (141.1550), QuirksMode, REST Client, Refactor-X (2.01), Remote Hosts Access (0.1), SASS support, Spy-js (141.1550), Stylus support (141.1550), Subversion Integration (1.1), Task Management (1.0), Terminal (0.1), TextMate bundles support (VERSION), W3C Validators (2.0), XPathView + XSLT Support (4), XSLT-Debugger (1.4), YAML, hg4idea (10.0)
[ 4391] INFO - ellij.util.io.PagedFileStorage - lower=100; upper=200; buffer=10; max=498008064
[ 4469] INFO - api.vfs.impl.local.FileWatcher - Starting file watcher: D:\WebStorm 10.0.4\bin\fsnotifier.exe
[ 4516] INFO - api.vfs.impl.local.FileWatcher - Native file watcher is operational.
[ 5474] INFO - lij.diagnostic.DebugLogManager - Set DEBUG for the following categories: []
[ 6709] INFO - rains.ide.BuiltInServerManager - built-in server started, port 63343
[ 8931] INFO - pl.stores.ApplicationStoreImpl - 77 application components initialized in 5758 ms
[ 8965] INFO - .intellij.idea.IdeaApplication - App initialization took 10956 ms
[ 9614] INFO - ellij.project.impl.ProjectImpl - 16 project components initialized in 258 ms
[ 9614] INFO - le.impl.ModuleManagerComponent - 0 module(s) loaded in 0 ms
[ 17941] INFO - odejs.packages.NodePackageUtil - Loading node package info for express-generator ...
[ 20427] INFO - odejs.packages.NodePackageUtil - Info for express-generator node package loaded successfully in 2478.9 ms
[ 21655] INFO - odejs.packages.NodePackageUtil - Loading node package info for express-generator ...
[ 22243] INFO - odejs.packages.NodePackageUtil - Info for express-generator node package loaded successfully in 577.0 ms
This problem is occured both on Ubuntu and Windows.
Your help is appreciated!
Updated:
Just as shown below, I use nrm to select the fastest npm mirror -- taobao, and Webstorm goes wrong with it. When changed back to npm' main repository,Webstormcan fetchexpress-generator` info, and everything is OK. Strange!
C:\Users\honghe>nrm ls
npm ---- https://registry.npmjs.org/
cnpm --- http://r.cnpmjs.org/
* taobao - http://registry.npm.taobao.org/
edunpm - http://registry.enpmjs.org/
eu ----- http://registry.npmjs.eu/
au ----- http://registry.npmjs.org.au/
sl ----- http://npm.strongloop.com/
nj ----- https://registry.nodejitsu.com/
pt ----- http://registry.npmjs.pt/
C:\Users\honghe>nrm test
npm ---- 1646ms
cnpm --- 1275ms
* taobao - 4388ms
edunpm - 994ms
eu ----- 2422ms
au ----- 1040ms
sl ----- 1369ms
nj ----- 2176ms
pt ----- Fetch Error

Answer 1

Initially, WebStorm installs specified version of express-generator package in temporary directory. Then WebStorm uses it to generate a new Express project. WebStorm doesn't use already installed express or express-generator packages.
BTW, express-generator always installs express package locally to a new project, so already installed express packages cannot be reused anyway.
According to the screenshot, the problem is that Version: Unavailable (version of express-generator). The cause should be specified at the bottom of the dialog, below CSS combobox. Not sure, but probably, it might be caused by the lack of the Internet connection. More detailed error description can be found in idea.log (on the main menu "Help | Show Log in Explorer").

Answer 2

I stumbled on this question while looking for a resolution. Mine was a syntax error in the 'package.json' file. Either in the main project directory or the node install within Program Files. The IDE doesn't flag the error, it just states that its 'Unavailible'.
To resolve this do the following, open CMD - within the folder for the node instalation, Delete the package.json along with the node_modules folder. (Ensure the non default ones are backed up so you can get them back) Then run:
npm init
This will intialise npm and restore the default packages and package.json. This will in turn restore express-generator.