macOS 10.13 High Sierra is currently in BETA, and therefore is not supported in Serato DJ. We aim to complete testing and confirm compatibility as close to the public release as possible.
If you have already updated to a BETA version of macOS High Sierra, you may have had some trouble installing the driver for your hardware. This is due to a new security feature that requires user approval before loading new third-party drivers. Please read our 'macOS High Sierra 10.13 driver install issue' article for more information: https://support.serato.com/hc/en-us/articles/115001883474
We are grateful for any feedback on any issues that you may encounter using the BETA, and encourage you to open a ticket to report them, here.
Please note - if you choose to use the macOS High Sierra BETA with Serato DJ, you do so at your own risk. Please be aware that to resolve issues you may need to roll-back to a supported macOS operating system