Error when adding files to empty project

[dangoor]

Steps to reproduce:

1. Create a new directory
2. Open that directory in Brackets (there will be no files listed)
3. In that directory, touch package.json

Expected: package.json is listed in the file tree in Brackets

Observed: No package.json shown, error in the console:

Uncaught TypeError: Object #<error> has no method 'data' ProjectManager.js:838
_treeDataProvider ProjectManager.js:838
$.jstree.plugin._fn.load_node_json jquery.jstree.js:1687
$.jstree._fn.(anonymous function) jquery.jstree.js:234
$.jstree.plugin._fn.load_node jquery.jstree.js:1648
$.jstree._fn.(anonymous function) jquery.jstree.js:234
$.jstree._fn.(anonymous function) jquery.jstree.js:234
(anonymous function) jquery.jstree.js:118
o.extend.each jquery-2.1.0.min.js:2
o.fn.o.each jquery-2.1.0.min.js:2
$.fn.jstree jquery.jstree.js:116
_fileSystemChange ProjectManager.js:2093
o.event.dispatch jquery-2.1.0.min.js:3
r.handle jquery-2.1.0.min.js:3
o.event.trigger jquery-2.1.0.min.js:3
(anonymous function) jquery-2.1.0.min.js:3
o.extend.each jquery-2.1.0.min.js:2
o.fn.o.each jquery-2.1.0.min.js:2
o.fn.extend.trigger jquery-2.1.0.min.js:3
FileSystem._fireChangeEvent FileSystem.js:675
(anonymous function) FileSystem.js:802
watchOrUnwatchCallback FileSystem.js:744
FileSystem._watchOrUnwatchEntry FileSystem.js:267
FileSystem._watchEntry FileSystem.js:334
(anonymous function) FileSystem.js:750
(anonymous function) FileSystem.js:749
_applyAllCallbacks Directory.js:111
(anonymous function) Directory.js:204
(anonymous function) AppshellFileSystem.js:280
(anonymous function) AppshellFileSystem.js:220
(anonymous function) appshell:273

[njx]

Medium priority to @ingorichter

[dangoor]

I have verified that this will be fixed when #8788 lands.

[dangoor]

Fixed