There has just been an update for Woocommerce, which solved my problem. I am able to edit variable products again. Hopefully it is working again for everyone.
A big thank you to the Woocommerce team!
I am, for some reason, experiencing exactly the same. Just updated my website before this happened.
Hopefully someone has a clue as to why this is happening?
Same here, not being able to complete update and unable to update plugins. Allready tried everything I can think of (manually update, deactivate plugins), but nothing will work.
Can I delete this plugin en put back 4.3?