Hi @weisbergweb –
I just tested it locally with WP 4.7.3 and the default theme “twentyseventeen”. Everything’s ok.
The External Videos admin tabs are built with javascript. The most likely situation is that your theme, or another plugin you’re using, is throwing a javascript error on the admin side; the error is blocking subsequent javascript execution. (Another possibility is that you’ve disabled javascript in your browser, but you would probably know if this was the case).
Let me know if you need help troubleshooting plugins. If you can use your browser’s developer console, you may be able to find the script causing the error directly. Otherwise, generally the procedure is to turn off all other plugins and switch to the default theme. Then, turn plugins back on a few at a time until the error appears.
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This reply was modified 7 years, 8 months ago by nimmolo. Reason: Followed up with a test