Mac Cross DJ 3.1.2(App Store) Crash

But this app crash every time I start.
What I experienced after installing the software are...
1.click "Cross DJ" icon
2.error dialog(attached PNG image) comes up
3.asked to create collection or not.
4.Cross DJ UI comes up
5.App Crash(attached error log)
(repeat this process again and again...)
Does anyone know how to fix this??(I don't understand what my error log said.)
<Assumption>
The error dialog said that "collection.crossdb" is not valid.
(I think so. because I've never used Cross DJ. So I assume that this file does not exist. )
Thanks for taking your time to read this.