Google Chrome	54.0.2817.0 (Official Build) dev (64-bit)
Revision	cd4d5eb8d957a3ce7ccf0fa60243eccd8ba47691-refs/heads/master@{#409416}
Platform	8673.0.0 (Official Build) dev-channel link

What steps will reproduce the problem?
(1) Install SyncIt Chrome App (https://chrome.google.com/webstore/detail/ohdeofhpijgjimnnnakdalgeopfomoib)
(2) Run it
(3) Open about:inspect page, select SyncIt Chrome App, open Console

What is the expected output?

No Sync errors.


What do you see instead?

requested sync file system is null ;(

window.html:1 Error in response to syncFileSystem.requestFileSystem: TypeError: Cannot read property 'root' of null
    at chrome-extension://ohdeofhpijgjimnnnakdalgeopfomoib/window.js:14:32
    at onload (chrome-extension://ohdeofhpijgjimnnnakdalgeopfomoib/window.js:13:27)
window.html:1 Unchecked runtime.lastError while running syncFileSystem.requestFileSystem: Sync: service is temporarily unavailable. (error code: -105).
    at onload (chrome-extension://ohdeofhpijgjimnnnakdalgeopfomoib/window.js:13:27)


And here are debug logs from about:syncfs-internals:

Debug Log
Time	Log Event
2016-08-11T08:51:01.365	[VERBOSE] Initializing for App: chrome-extension://ohdeofhpijgjimnnnakdalgeopfomoib/
2016-08-11T08:51:01.368	[VERBOSE] [Initialize] Start.
2016-08-11T08:51:01.445	[VERBOSE] [Initialize] Failed to initialize MetadataDatabase.
2016-08-11T08:51:01.445	[VERBOSE] Service state changed: 1->4: Unrecoverable database error
2016-08-11T08:51:01.445	[VERBOSE] Service state changed: 4->1: Could not initialize remote service
2016-08-11T08:51:01.445	[VERBOSE] OnRemoteServiceStateChanged: 4 Unrecoverable database error
2016-08-11T08:51:01.445	[VERBOSE] [Local sync] Scheduling task in 1790245 ms
2016-08-11T08:51:01.445	[VERBOSE] OnRemoteServiceStateChanged: 1 Could not initialize remote service
2016-08-11T08:51:01.445	[VERBOSE] [Local sync] Scheduling task in 133709 ms
2016-08-11T08:51:01.446	[VERBOSE] DidInitializeForApp (registered the origin): chrome-extension://ohdeofhpijgjimnnnakdalgeopfomoib/: Failed.