angular-cli: Module not found: Error: Can't resolve './$$_gendir/app/app.module.ngfactory'

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- [ ] feature request

Versions.

angular-cli 1.2.0 node 6.x npm 3.x

The log given by the failure.

I’m getting a Module not found error with no additional information. --verbose provides no additional useful information.

What kinds of things could account for this type of error?

[rtm@rtm-desktop-15 ~/repos/TNF/identity-ui]$ ng build --prod
Hash: e7dae1738ac862e19a00
Time: 21314ms
chunk    {0} polyfills.71b130084c52939ca448.bundle.js (polyfills) 177 kB {5} [initial] [rendered]
chunk    {1} scripts.cf4bd508b777cd0dcd0a.bundle.js (scripts) 318 kB {5} [initial] [rendered]
chunk    {2} main.37ea370eb898e54aed3a.bundle.js (main) 1.11 kB {4} [initial] [rendered]
chunk    {3} styles.48601ea560e407313063.bundle.css (styles) 69 bytes {5} [initial] [rendered]
chunk    {4} vendor.bfdee3afc7b1496cdc22.bundle.js (vendor) 849 kB [initial] [rendered]
chunk    {5} inline.8ed31a5e25b6accbf838.bundle.js (inline) 0 bytes [entry] [rendered]

ERROR in ./src/main.ts
Module not found: Error: Can't resolve './$$_gendir/app/app.module.ngfactory' in '/home/rtm/repos/TNF/identity-ui/src'
 @ ./src/main.ts 3:0-74
 @ multi ./src/main.ts
[rtm@rtm-desktop-15 ~/repos/TNF/identity-ui]$