Why does sencha build app fail? - build

Question

I'm allways running into this exception when I try to build my app with the sencha commandline tools. However, other apps seem to work fine. What am I missing?
UPDATE
I figured out it has something to do with the fact that I want my buildPath to be outside of the app directory. My section in the app.json looks like this:
"buildPaths": {
"production": "../deploy/frontenddemo/production",
"testing": "../deploy/frontenddemo/testing",
"package": "../deploy/frontenddemo/package",
"native": "../deploy/frontenddemo/native"
},
If I change it to:
"buildPaths": {
"production": "build/production",
...
},
Everything works as expected. I don't know why. It should be possible to have the builds outside the app directory I guess.

Answer 1

Ok, after a lot of try and error. I found the root cause of this issue.
My app.json looked like this:
"archivePath": "../deploy/frontenddemo/archive/",
"buildPaths": {
"testing": "../deploy/frontenddemo/testing",
"production": "../deploy/frontenddemo/production",
"package": "../deploy/frontenddemo/package",
"native": "../deploy/frontenddemo/native"
},
The problem with this structure is that both archive and builds produce a directory "sencha" outside of the configured path. Meaning they both create ../deploy/frontenddemo/sencha
with different contents. I wonder if that is documented somewhere?
The fix was easy. I just changed the paths to this:
"archivePath": "../deploy/frontenddemo/archive/",
"buildPaths": {
"testing": "../deploy/frontenddemo/builds/testing",
"production": "../deploy/frontenddemo/builds/production",
"package": "../deploy/frontenddemo/builds/package",
"native": "../deploy/frontenddemo/builds/native"
},

Answer 2

I've had previous issues deploying directly to a web server such as MAMP, or even Mac's default web server, in ~/Sites/
Have you tried changing your deployment directory to something other then MAMP, and then manually copy/paste it over?
Also, what exact version of the SDK are you using? 2.1 beta 3 was released a bit ago, as well as a new Sencha Cmd 3.0.0.122 (used to be called Sencha SDK Tools).
Forum Announcement: Sencha Touch 2.1.0 Beta 3 is available