When I click 'Connect to Facebook' button a small window appear with default Facebook wall but not with application settings. See screenshot: http://hkar.ru/eYsB
You just have to click "Save Facebook Session" button. Located on "Connect with Facebook" page setting.
Does this work with Google Chrome?
Because I can't get this 'Save Facebook Session' thing to work...
Just had the same issue. Thanks to @sheleviy, I tried registering in Safari and it worked like a charm. There is clearly an issue with connecting OmniGallery to Facebook using Google Chrome.
Correction: the issue is most likely not with Google Chrome, but simply that you must be logged out of your account to set up OmniGallery and Facebook. Log out of Facebook and try again.
On the new omni gallery plugin (v1.0.6), this bug already solved i think, since on my blog there is no problem at all.
Please note this one: the Facebook session on this plugin won't stay long, so make sure if you reset your Facebook session periodically
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