Hey Chazza,

Thanks for getting in touch,

Before I can start the troubleshooting process I need to gather some further information off you.

1. Have you purchased a Serato DJ activation license?
-- Your Mixtrack Pro will not connect with Serato DJ until you activate the software on your computer.
-- Your other option is to run the 14 day trial of Serato DJ.

2. Can you please send me your full computer specs?
-- Right-click your MY COMPUTER icon and select PROPERTIES.
-- Copy this information back here.

3. Are you using any external hard drives to organise your music?
-- How big is the external drive?

4. Are you using any other USB devices?

Thanks.