Should mochaProAE.bundle be running when I am in a AE project but not using Mocha Pro?

This is a residual effect of needing to load a separate process to import external clips.
You can ignore it.

Although i’m surprised you’re seeing this. What version are you running, and what system version of macOS?

Thanks Martin.

I am running:

OS 10.14.5
Mocha 5.6.0