Has anybody found a remedy for this yet? It just started happening to me this week. I'm on X6 w/ the latest version, and only have the one monitor running. I did go to Edit, Preferences, Reset Options, and Reset Side Windows as I read somewhere else. I close and reopen Chief and the library is in its side default location. I pop it out to the center of my screen where abouts I want it. Save, close and reopen it. Launch the library browser and there it is again, way up in the uper left corner, partly off of my screen again. It behaves until I close Chief and reopen it again. Annoying.