Buttons missing from post editor

Same here, but found that if I clicked the media button there was a new option for adding via SoundCloud is Gold with all the bells and whistles. Worked just as well, I’d think, as if there’d have been the button.

I am having the same problem too missing button. I have shutdown all widgets and still no button. Using short codes now I am using the latest wordpress with and the latest soundcloud is gold.