Ad Set Error: Unable To Generate Display Formats For the Creative: Could not generate display formats available for the Creative 23, 844, 018, 275, 920, 057. (#1815952) We've been running this campaign with these ad sets for months. All we've change is the ad creative when needed. Has anyone come across this problem before? I can't find any info for it on Google or in the Facebook Help Center. It's apparently a problem at the ad set level, which we haven't changed in months. Any help at all would be greatly appreciated.
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