Facebook iframe rails app without change now returns a "406 Not Acceptable" response -


using facebooker gem. 2 separate apps both start returning blank pages in facebook app iframe , rails logs show 406 errors.

note direct access site same url called in iframe works if fb_sig parameter dropped.

have facebook changed either parameters (naming) pass app or deprecation of fbml? or facebooker issue?

i ran same problem recently.

this fix it:

please check if facebook turned on "post canvas" in "advanced" tab in application settings on www.facebook.com/developers/. if so, deactivate.

hope helps!


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