The message I'm getting is the standard: "Firefox is already running, but is not responding." I'm using a PC with Windows 7. I've tried: - Opening task manager and manually ending the process. This didn't work because the process is not listed in applications, processes, or services. - Deleting the parent/lock file. This didn't work because the file is not in any of the firefox folders. I've checked APPDATA/Local/Firefox as well as APPDATA/Roaming/Firefox, and the original install folder just to be thorough. It's not a hidden file either - I have those set to display. - Creating a new profile and importing settings from the old one. I can't import settings because the old profile is still running. - Restarting before and after each of these potential solutions, including restarting in safe mode, shutting off the computer and waiting a bit before restarting, etc. All I really want back are my bookmarks, which I've spent quite a while creating. Unfortunately, there is no file I can find for the default profile that has the bookmarks stored. When I created a new profile, a folder appeared with its name in the APPDATA/Roaming/Firefox folder, with all of the bookmarks, etc. There is no such folder for the default profile though - which is the one I want. I've even tried switching to Chrome and importing bookmarks, but that doesn't work because the bookmarks can't be imported while Firefox is still running.