Sometimes the editor hides itself off screen. There is a program called "front and center" that brings it back on screen. I found I could lost the editor if I didn't close it before shutting down the computer. Also found that when front and center brought it back it still looked funny, so I'd minimise and maximise the editor itself, then shut the editor and restart the editor and it would be ok. If you can't find the program, pm me and I'll send you it. Good luck.