When importing Playmaker from the Asset Store in 2018.2, script upgrader kicks in and triggers an API update.
Afterwards, a lot of errors appear and when trying to run some of the Playmaker sample scenes, Unity crashes.

Repro steps:

- Start a new project and download the Playmaker asset store pack : https://assetstore.unity.com/packages/tools/visual-scripting/playmaker-368
- Install the pack
- Notice the pop-up that warns about script upgrades
- Notice the errors in the console when the upgrade finishes
- If you download the Playmaker sample scenes from their website and try to run any of them, you'll notice that they crash due to the corrupted dll.

Also Reproduced in Trunk

Not reproducible in 2018.1 since alpha1 but that is because script upgrader doesn't kick, because the APIs were deprecated in later Unity versions