Library missing most nodes

I started using Substance Designer earlier this year but had to cancel my subscription for a few months. I recently got back to it and had to upgrade to the version using Creative Cloud rather than the Substance Launcher. Since then my node library is missing all of the more complex nodes like noises, patterns and PBR materials. The ones I already had in my graphs continue to work but I can't create new ones except by duplicating them.

Things I've tried, to no avail:

* Reinstalling several times, installing Substance painter, restarting the computer, doing all the previous after uninstalling all the previous Substance installs.

* Erasing application data in User>Library>Application Support.

* Creating a new Library window and closing the old one.

* Leaving the window open overnight (this seems to have crashed Designer after a few hours).

* Checking logs (can't be done, the entire folder they're supposed to be in is empty).

* Rebuilding thumbnails in the Library settings (seems to do nothing). 

I'm on MacOS 10.14.6, a 2017 Macbook Pro with a Radeon Pro 560. I never had any issues like this with the old version.