Clicking the Stars (rating) on the player portion of the interface while the song is currently playing causes a crash to desktop (it has always caused the bug report window to appear for me in the past but didn't crash to desktop), the song is however retaining the rating I give it when I restart the software.
I am currently using 188.8.131.5204.0 with Ms SQL Express 2016
Thanks for your report.
This issue should be fixed in our upcoming official release.
You can try this fix in our most recent test version, available here:
Great to hear, thanks for the update!