Audacity has stopped working for me. I was using it yesterday to edit audio like I normally do. Nothing special. I closed all my files. A few hours later, I tried to open it and Audacity would not open. The logo would pop up in the middle of the screen and that was as far as I could get.
I restarted my computer. I uninstalled and re-installed the program three times.
See especially the section at the bottom of the FAQ about anti-virus apps interfering with Audacity, and follow the suggestion there about resetting Audacity preferences when you reinstall it.