Okay, I installed the most recent LTS (1.447.2). Now, I am not getting any errors in the log, but projects cannot be configured. If I try to configure a project, it continues to display the LOADING text with grey overlay; scrolling down, the post-build actions are loaded up until the Warnings plugin, it seems. But, as I said, nothing shows up in the log.
This is with the updated 4.11 plugin. It might be worth mentioning that the previously installed version, before upgrading to 4.10, was 3.21, and it worked perfectly then.