PS: If someone could provide me with the stack trace I will appreciate it, I can't debug this any further as-is without compiling my own version of the ARC extension which dumps the core to a file instead of uploading it elsewhere (there should be a developer option to do that somewhere).

Earlier this was working fine for older version around one month back. Now its keep on crashing on app Launch.

_modules/mfaihdlpglflfgpfjcifdjdjcckigekc/gen_main.min.js:59 (anonymous function)
_modules/mfaihdlpglflfgpfjcifdjdjcckigekc/gen_main.min.js:62 (anonymous function)
_modules/mfaihdlpglflfgpfjcifdjdjcckigekc/gen_main.min.js:74 (anonymous function)
_modules/mfaihdlpglflfgpfjcifdjdjcckigekc/gen_main.min.js:75 (anonymous function)
_modules/mfaihdlpglflfgpfjcifdjdjcckigekc/gen_index.min.js:108 (anonymous function)
_modules/mfaihdlpglflfgpfjcifdjdjcckigekc/gen_index.min.js:109 (anonymous function)
_modules/mfaihdlpglflfgpfjcifdjdjcckigekc/gen_index.min.js:61 (anonymous function)
_modules/mfaihdlpglflfgpfjcifdjdjcckigekc/gen_index.min.js:97 ($jscomp.scope.Plugin.postMessage)
_modules/mfaihdlpglflfgpfjcifdjdjcckigekc/gen_index.min.js:126 ($jscomp.scope.Plugin.computeLayout_)
_modules/mfaihdlpglflfgpfjcifdjdjcckigekc/gen_index.min.js:123 ($jscomp.scope.Plugin.doLayout_)
_modules/mfaihdlpglflfgpfjcifdjdjcckigekc/gen_index.min.js:99 ($jscomp.scope.Plugin.initializeWindow_)
_modules/mfaihdlpglflfgpfjcifdjdjcckigekc/gen_index.min.js:96 (anonymous function)
_modules/mfaihdlpglflfgpfjcifdjdjcckigekc/gen_index.min.js:63 (anonymous function)
_modules/mfaihdlpglflfgpfjcifdjdjcckigekc/gen_index.min.js:114 (anonymous function)
_modules/mfaihdlpglflfgpfjcifdjdjcckigekc/gen_index.min.js:122 ($jscomp.scope.Plugin.showCrash_)
_modules/mfaihdlpglflfgpfjcifdjdjcckigekc/gen_index.min.js:115 (anonymous function)
_modules/mfaihdlpglflfgpfjcifdjdjcckigekc/gen_index.min.js:135 ($jscomp.scope.Plugin.handleSystemMessage_)
_modules/mfaihdlpglflfgpfjcifdjdjcckigekc/gen_index.min.js:106 ($jscomp.scope.Plugin.handleAppPluginMessage_)
_modules/mfaihdlpglflfgpfjcifdjdjcckigekc/gen_index.min.js:117 (anonymous function)
_modules/mfaihdlpglflfgpfjcifdjdjcckigekc/gen_main.min.js:37 (anonymous function)
_modules/mfaihdlpglflfgpfjcifdjdjcckigekc/gen_main.min.js:37 (anonymous function)
_modules/mfaihdlpglflfgpfjcifdjdjcckigekc/gen_main.min.js:37 (anonymous function)
_modules/mfaihdlpglflfgpfjcifdjdjcckigekc/gen_main.min.js:37 (anonymous function)
_modules/mfaihdlpglflfgpfjcifdjdjcckigekc/gen_main.min.js:37 (anonymous function)


ARC HTML5 FS: Request FileSystem: 2.22ms
The set of system directories has changed. Recreating.
ARC Window Popup: 49.9ms
ARC appWindow Init: 0.367ms
ARC JS Init: 22.0ms
Compositor is enabled
File system is initialized.
Error
Plugin not ready
ARC HTML5 FS: prefetchExtraFileMetadata_: 46.1ms
ARC Plugin Load: 461ms
Error
Plugin failed to load
Crash reporting is enabled
prod: ARC
arc_app_name: Store @Hand
ptime: NaN
crash_time: Thu Jan 12 2017 12:36:41 GMT+0530 (India Standard Time)
ver: 54.5021.629.0
arc_build_tag: arc-runtime-54.5021.629.0
message: loadfailure
chrome_version: 57.0.2978.0
app_id: llblnkajcbbminalpopjkjmdaceeooia
app_version: 0.23
app_package_name: com.storeathand.consumerathand
runtime_name: App Runtime for Chrome (Beta)
runtime_update_url: https://clients2.google.com/service/update2/crx
arch: x86-64
nacl_arch: x86-64
os: win
target_arch: nacl_x86_64
width: 360
height: 672
is_minimized: false
is_maximized: false
is_fullscreen: false
runtime_updated_while_running: null
sig: LoadFailure
Attempting to report crash...
FINISHED REPORTING CRASH
Error
Plugin not ready
Successfully uploaded crash report.
crash id: 4fa8e3a580000000
Error
Plugin not ready
Error
Plugin not ready

Deleted: Crash.png 99 KB

	Crash.png 99 KB View Download

I am curious, your report mentions the store@hand app, but this bug is about the exponent app.

Is store@hand developed using exponent?

Store @Hand App is working on other system. On my current system all apps are crashing on launch. May be some issue with browser configuration. This app is not exponent app.