CClean Registry box empty ver 16 on XP64 in CCleaner Bug Reporting Posted March 18, 2012 Thanks for your response. (1) Turned out it was in 3.15.643 (64-bit) as well. (2) But I discovered a (very strange) workaround: —By left-clicking the mouse and dragging the right-hand border of the CCleaner window ANY AMOUNT, the window suddenly "populates" the appropriate gridlines and text inside it. Notes: —XP64 —I've used CCleaner for years and years, numerous times daily; never seen this before; likewise CCleaner has lived on the present XP64 for years —The window, when faulty, is just a totally empty box; nothing inside it at all—BUT ONLY for the Registry function. You can go back and forth to the basic Clean function and that works just fine. —I'll try for screenshot ASAP. Tonight it is working OK, as though it no longer wants to bedevil me since I discovered the workaround.