"The name of the selected output module is already in use" error.

I've just sent 3 items to render, and got this weird message about the name of the output module. Whaaaat?? 

Who cares if the output module's name is already in use - I'm not changing the output module settings - I just selected one of the presets (H.264 - Match Render Settings - 40 Mbps...but it doesn't matter which one I choose...it could be ProRes444....anything), hit Render, and got the error. Exporting things one at a time fixes the problem.

I'm on AE Beta 23.4.0x28, Windows 10

Oh yes - and I still often get the "The directory originally specified in the selected output module no longer exists." error, so I have to click on the output filename to choose the exact file location that AE has already set.