Maven broken after latest update

Hi,

I am unable to load maven plugins after updating. System info:

IntelliJ IDEA 2017.1.5
Build #IU-171.4694.70, built on July 4, 2017
JRE: 1.8.0_112-release-736-b21 amd64
JVM: OpenJDK 64-Bit Server VM by JetBrains s.r.o
Windows 7 6.1

Already manually selected my maven and repository directories. Tried forcing a re-import, checking 'use plugin registry', and invalidating the cache. Nothing seems to fix this.

I was using a plugin to generate some source code and now the generate-sources phase is not even executing.

Thank you for your time.