I've tried a few times and it's been consistent.

I opened the Edit->MultiRiff dialog (I wanted MIDI regen, but it's not there), clicked [Help] ... nothing, clicked to Windowws [X] close ... nothing.

[Close] closes as expected.

GS,
"I wanted MIDI regen"
Are you sure your midi has enough of recorded source data to create "Multiriff"? If it has a single part, I don't think it will create different variations. Just a thought.

I know there are some issues with Midi+Microchords....

"X" was known and reported issue.

P.S. These are good candidates for hypothetical "Bug report" thread

Hi Misha,

I just guessed where to go for MIDI regen and it wasn't there.
It's probably somewhere else of I'm confused. I do still find some of BiaB a maze.

My post was really because neither [Help] nor the [X] quit worked, but I thought I should mention the context.

GS.,
Yes, you are right. I tried. Seems MIDI is not a part of Multiriff world. It calls for RT.
I thought that if MIDI style contains 2 parts (part maker), it should in theory give variation in Multiriff box, I guess not.