I downloaded the beta yesterday and install on my MBP retina with mavericks 10.9.4 (yes, the latest one) and worked just fine. The 12 Step was connected thru a USB hub. I also imported the presets from my old windows laptop, which I made a image to run on Parallels in the same MBP. Everything is wor...

great!
just added my information there!

I'm also looking forward for the mavericks support.

Let me know if you guys need a beta tester!

+1 with the same problem with a 12 Step + Expander connected to a Korg Kross.
If I disconnect the midi in of Expander everything works just fine.
But I need this connected to receive the program changes from Korg...

Also running the firmware A2.

Any news about this case?

wow, that was a very quick answer! thanks!
I'll update tonight. looks very easy.

Hello, I'm definitely glad we finally got this fix in. Just so everyone knows, if you use this firmware and open up the editor it will prompt you to "update" your firmware. Don't do this, it will just revert you to the old firmware. All you have to do is click Cancel and you can use the e...