WSTJ-x V 2.1.2 froze about the same time that I deselected Menus to remove the menus from the top bar. I wanted to have more room for the scrolling information, but came back a while later and noticed that the there had been no spots reported, and that the last recorded time in the reception information window was about the time when I deselected "menu". The radio was still functioning, the scroll was moving (I believe, but now that I think of it, I didn't look at the time on the waterfall window to see if it was advancing.) Good luck.
de Tom W5XTT