I just updated to the June 1 version (which in the description says 3.5 but in the Google Play Store application info states “Current Version” 3.4.2).
LingQing didn’t work at all until I quit and restarted the application after installation. It was not showing any blue or yellow words. It’s working fine now.
I have a playlist with 80 lessons and can’t seem to delete it. When I click the trash can icon, I get a confirmation dialog, click OK and then nothing happens. I have the app and data stored on the SD card.