Hey Frits… glad to see you back from the coding cave! 😉
It seems zPEQ got under the wheels during the restructuring:

Showing the embedded editor in the inspector additionally freezes everything.
I’ll give the main part of the update a thorough test over the weekend.
Also, previewing a mono sound file in the browser with no arrangement powered on gets sent only to the first output channel (not related to 2.40).