Roland MIDI Drivers Break MacOS High Sierra

I have one of the above interfaces. I plugged it in to my iMac Pro which is still on High Sierra still as I am a cautious type (usually) and not yet sure how well Mojave would behave with all my pro audio software. Anyway, I plugged in the interface, searched for it in Audio Midi and… 

Nothing there. All my other interfaces are there, no Roland. 

Hmm. Usually, MIDI thingies are class-compliant ~ they’re just plug and go. Why would Roland release one that isn’t? Oh well, no big deal. So, I head to the site and, sure enough, there’s a driver for Macs. 

I download it and install it, reboot and…

Well, that was around four hours ago. Since then, I’ve been trying to get my iMac to boot to desktop. It boots to the Apple and progress bar but that’s it. The bar fills up, at at about one-tenth its normal speed and then stays stuck at the end. I’ve even left it for an hour, thinking I was being impatient. No change. 

Sooo, okay, I can handle this. Just hold down shift and I can boot into safe mode. Then uninstall the stupid driver. 

Nope. 

I’ve been trying to boot into safe mode for a large part of the last few hours. Whatever Roland’s techs have done, they’ve fucked that ability. 

So, ten minutes ago, I realised this isn’t going anywhere and I booted into Recovery Mode (command-R). 

Now I’m doing a whole fresh install of High Sierra because Roland can’t design a MIDI driver. 

Thanks, Roland!