Reply to Friend has a recording issue?

Her setup:
Turntables: stanton str8-20
Mixer: behringer nox404
Rane serato sl2

Her problem:
*RECORDING ISSUE*
Basically she told me that when she got the upgrade for the software, the way the recording works worked "differently". She told me that she used to just be able to hit the record button and record a mix. But now, that doesnt work for her anymore. My other friend tried helping her out by telling her to get an AUX Cable that connects the computer to the mixer. That doesnt work either. Now she comes to me for help because I am a music producer and such :P but i'm not familiar with Serato which is why I come here. So i was wondering if anyone knows what she is doing wrong or what is wrong and how I can fix it for her tommorow? Thank you