Hi all,
I'm a owner of beloved Rane TM57SL mixer and last years I've been running Scratch Live on PC (Windows 7, 8 and 10). Few days ago I bought Macbook Pro with preinstalled macOS Sierra. I didn't know that there will be huge problem with run SL with Rane 57 on it (I didn't noticed before that macOS Sierra is not supported for SL). Fortunately I partially solve that issue but I just want to say it is very unfair by Serato that they abandoned to support their hardware (not software!) because that situation forces me to buy a new hardware to entirely use Serato functionality. When I googled few threads about that issue I red post-advice (probably written by Serato employee) that you should buy a new hardware or downgrade your system..
I bought a new laptop with preinstalled system and I have to buy a new mixer too or downgrade a system. It's not a good approach for customer and for a fan for sure. I'd like to say that is not a problem only with a mac. There's also issue with i5 processors running Windows. Serato knows well that you have to face with problem to run SL on this platform too.
I spent some time to find out what's wrong with my new mac and finally with SL software.
People interested in that subject know that the workaround is to disable SIP (System Integrity Protection designed to protect your mac) but it creates a lack of security in your system. That's why I decided to disable only kext protection. All you have to do is enable SIP and allow installation of unsigned kernel extensions. Below is how to do that.
1. Boot mac from Recovery - restart mac and hold cmd+R until Apple logo appear
2. Run Utility - Terminal
3. Disable SIP by command 'csrutil disable'
4. Restart mac - SL with 57 should work properly
5. Boot mac from Recovery again
6. Run Utility - Terminal
7. Enable SIP by command 'csrutil enable --without kext'
8. Restart mac and run your SL with 57
More info here
derflounder.wordpress.com
Problem solved partially because my mac is not protected entirely but fortunately Scratch Live with my 57 works like a charm.
Dear Serato team, instead of encouraging me to buy a new mixer please ensure to run my 57 with SL as long as possible. As I know you won't release new version of Scratch Live but after all I hope that a new version with certified kext would solve the problem.
Sincerely yours,
demen

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