I tried everything, read all the forums about Oembed for buddypress. There was a time I had to rename the folder to bp-oembed, but nothing ever worked. I deactivated the plugin and found that there's a new version and went and installed it. After activating, I didn't see the Invalid header error, and i didn't rename anything because it said that this version fixes that. However, whenever I post a link from a youtube video, it's still showing as a mere LINK and no video embed! I don't know if there's something I have to do from my end.
I'm using backwards compatibility and using the bp-sn parent theme. Buddypress and wordpress latest version.