命令行cfx run后，报错：I can't find the application binary in any of its default locations

初学请见谅。参考：https://developer.mozilla.org/zh-CN/docs/Mozilla/Add-ons/SDK/Tutorials/Getting_started
更改main.js后运行 cfx run

结果（红字）：
(D:\browser\Firefox-Plug\addon-sdk-1.17) D:\browser\Firefox-Plug\my-addon>cfx init
* lib directory created
* data directory created
* test directory created
* generated jID automatically: jid1-U5hdFQpbRKuPPw
* package.json written
* test/test-main.js written
* lib/main.js written

Your sample add-on is now ready.
Do "cfx test" to test it and "cfx run" to try it.  Have fun!

(D:\browser\Firefox-Plug\addon-sdk-1.17) D:\browser\Firefox-Plug\my-addon>cfx run
I can't find the application binary in any of its default locations
on your system. Please specify one using the -b/--binary option.

(D:\browser\Firefox-Plug\addon-sdk-1.17) D:\browser\Firefox-Plug\my-addon>

不懂为什么说没有找到程序？或者说如何更改？
SDK安装应该没错吧，否则运行cfx init时就应该出错？

版本：
Firefox Developer Edition 39.0.0.5587 64位
SDK-1.17

首先
cfx已经被抛弃了
https://developer.mozilla.org/en-US/Add-ons/SDK/Tools/cfx
官方现在主推jpm

其次
cfx根本就没有检测firefox可执行文件路径的代码
一般还是手动指定-b参数或者设置local.json来使用
https://developer.mozilla.org/en-US/Add-ons/SDK/Tools/cfx#Using_Configurations
这点上，jpm勉强及格

舌尖跳舞：网上只是说输入 cfx run，回到原帖

难道是火星网？

http://stackoverflow.com/questions/22610616/when-i-try-to-run-cfx-run-or-cfx-test-using-the-mozilla-add-on-sdk-my-appli

pcxfirefox：已经说了很清楚了

Please specify one using the -b/--binary option回到原帖

网上只是说输入 cfx run，

pcxfirefox：已经说了很清楚了

Please specify one using the -b/--binary option回到原帖

是在cfx run后面跟火狐的exe文件路径吗？

已经说了很清楚了

Please specify one using the -b/--binary option