Since upgrading to AS 4.1 from 4.0 I get the event log message

```
Plugin Error: Plugin "Install Apk" is incompatible (supported only in IntelliJ IDEA).

```

on starting AS.

Yes, this is like a previous report[1](https://stackoverflow.com/questions/64347831/android-studio-4-1-plugin-error-plugin-is-incompatible-supported-only-in-int), but this appears to be a bundled plugin. I don't think it's anything I've added, nor can I find anything obviously out of place either in the list of plugins under settings nor in the plugins directory.

Installing APKs does indeed not work, so it is a problem rather than a nuisance.

How do I track down where it's coming from, and even better, fix it?