Thumbnails for tiles no longer appearing, error upon re-installing Fauxbar

[GoogleCodeExporter]

I'm unsure when this problem started occurring, but I no longer see thumbnails 
on any of my site tiles.  As discussed on Twitter, I backed up my Fauxbar 
options, un-installed the extension and re-installed it.  Upon re-installing 
the following error message appeared when Fauxbar started up and was waiting to 
index (screenshot also attached).

"Fauxbar has encountered a security error. Unable to access thumbnail files."

Despite the error, indexing completed and I re-imported the options, but 
thumbnails remain elusive.

- Fauxbar 1.2.2
- Chrome 15.0.874.121 m
- Windows 7, 64 bit edition, SP 1

Original issue reported on code.google.com by bewareof...@gmail.com on 26 Nov 2011 at 10:14

• Merged into: #81

Attachments:

• fauxbar_thumbnail_error.png

[GoogleCodeExporter]

Does this happen with Fauxbar Lite as well? 
https://chrome.google.com/webstore/detail/bfimmnpbjccjihohjkimphfmmebffbmk

This error happens when Fauxbar tries to use "window.webkitRequestFileSystem" 
and it throws "FileError.SECURITY_ERR".
Citing http://code.google.com/p/chromium/issues/detail?id=96017#c7
this is probably "the browser cannot create/initialize the metadata database 
for the API under the profile directory"

Sounds like Chrome's File System folder is having permission issues:
C:\Users\USERNAME\AppData\Local\Google\Chrome\User Data\Default\File System

Maybe see if the File System folder's permissions has Full Control? (example 
screenshot attached)

Reinstalling Chrome would probably fix this, but for looking at this further 
you could try:
1. Open the File System folder using Windows Explorer; take note of the 
triple-digit-named folders listed within (assuming there are any, eg 001, 002, 
etc).
2. Uninstall Fauxbar.
3. Refresh the File System folder; did a triple-digit folder disappear?
4. Install Fauxbar.
5. Refresh the File System folder; did a new triple-digit folder appear?

If no new folder appeared upon installation, Chrome is probably having 
permission issues, unable to modify its File System folder's contents. (When 
Fauxbar gets installed, a new triple-digit folder should appear, with a new 
unique triple-digit name, increased for every installation.)

If a new folder *does* get created yet the error alert still occurs, I'd still 
say it's a Chrome bug around a folder permission issue.

If Fauxbar Lite does not produce this error, maybe it's possible that Chrome's 
bugged itself for Fauxbar's extension ID logic around the FileSystem API?

But if Fauxbar Lite gives the error as well, I could try creating a small test 
case extension for you to see if this error occurs still.
Then maybe you could submit a bug report to crbug.com if you'd like.
Reinstalling Chrome would probably fix this, but would probably wipe away any 
useful info the Chromium team may want.

Enabling logging for Chrome may also give further details when you try the 
steps above:
http://www.chromium.org/for-testers/enable-logging

Let me know how you get on.

Original comment by fauxbar....@gmail.com on 27 Nov 2011 at 6:10

• Added labels: Type-Defect

Attachments:

• filesystem.png

[GoogleCodeExporter]

Hi Chris,

Fauxbar Lite also experienced the same problem.  I watched that folder (it only 
contains two folders: "000", and "Origins") and nothing changed when 
uninstalling and reinstalling Fauxbar (both versions), no new folders appeared 
and nothing disappeared.  I checked the permissions and full control all 
appears to be set.

Original comment by bewareof...@gmail.com on 28 Nov 2011 at 7:56

[GoogleCodeExporter]

If you go to 
http://www.html5rocks.com/en/tutorials/file/filesystem/#toc-samples-basic
and within the Output section, click the "Add some files" and "List files" 
buttons, do those seem to work? Or do they produce errors?

Original comment by fauxbar....@gmail.com on 29 Nov 2011 at 4:13

[GoogleCodeExporter]

Yeah as soon as I went to that link the output showed "Error: SECURITY_ERR".  
So, my installation of Chrome has borked itself somehow?

Original comment by bewareof...@gmail.com on 29 Nov 2011 at 4:16

[GoogleCodeExporter]

D'oh! Yup, I'd say it's borked :(

And that tutorial only uses temporary storage, not persistent storage like 
Fauxbar...

I'd suggest enabling error logging, restart Chrome, try that html5rocks demo 
again, quit Chrome, then look at the log. Maybe that would give some insight.
http://www.chromium.org/for-testers/enable-logging

Either way, reinstalling Chrome will hopefully fix this for you.

Original comment by fauxbar....@gmail.com on 29 Nov 2011 at 4:23

• Changed state: Done

[GoogleCodeExporter]

Thanks Chris, uninstalled and re-installed Chrome (had to rename my profile 
folder too - as it just used that again and the problem was still there) and 
all is well.  Thank goodness for Chrome Sync.  Tiles are now updating.  :)

Original comment by bewareof...@gmail.com on 30 Nov 2011 at 5:31

[GoogleCodeExporter]

Cool, good to hear. Stupid Windows...

Original comment by fauxbar....@gmail.com on 1 Dec 2011 at 4:22

[GoogleCodeExporter]

Merging this with issue #81 - andrewbond01 has discovered how to fix this 
without needing to reinstall Chrome.

Original comment by fauxbar....@gmail.com on 11 Dec 2011 at 2:35

• Changed state: Duplicate