Applications in OS X save preferences to property list (.plist) files in various preferences folders; however, sometimes multiple copies of a specific plist file may accumulate in the same folder.

If you browse through the user library in OS X Lion, you may see a number of .plist.lockfile files in your preferences folder. Here is what these and other plist subtypes are all about. Topher Kessler ...

The Preferences in Adobe Illustrator allow you to make changes that will fit your needs. There are default preferences that come with Illustrator; however, the user can make changes to the panel ...

In case, Adobe is unable to parse the file, first of all, check the format of the file. If the file format is not supported, we can change the extension of the same. You may also encounter this issue ...