I am using Parallels Desktop 7 on my MacBook Pro, Mac OS X (10.7.3). I created several VMs using ISO images. These VMs, their enclosing folders and image files no longer exist but Parallels keeps on showing these nonexistent resources in selection menus. For example, Parallels Desktop > Preferences > General (Tab) has the "Virtual Machines Folder" drop-down menu. Here I get a list of every VM folder used. These folders don't exist and clicking on them brings up the pop-up: The folder ... does not exist. I would like to know how to purge this list. Another example, Devices > CD/DVD1 > Configure brings up the Configuration pane. Clicking on the "Connect To" drop-down menu brings up a list of Physical CD/DVD Drives and Image Files. The Image Files list includes every image file mounted. These image files do not exist. How can I remove the nonexistent images from the list?