I had some issues with settings not carrying over when updating to 4.2.0. I copied some folders over and finally got it back up. I was prepping for a wedding. When I fired up Traktor at the wedding, I had similar issues again. Everything was back to default settings. I was able to get the Collection back but then most of my songs had no stems or beat grids or whatever it's called. See screenshots. When I loaded a song to my deck it was saying "Cannot execute BPM detection due to missing transient: please analyze" But even after analysis, the same issue occurred. All this usually kicks off when Traktor tells me it can't read some log file, which I usually delete and it starts up.
What do I need to do to fix this?? And keep it from happening in the future??