PlistChecker 1.5.1

After spending too many hours wondering why my document icons werent showing up under Mac OS X, and finally figuring out that it was caused by a typo in my plst resource, I wrote this utility to help other Mac OS X programmers.
Drag a packaged application, or a single-fork application containing a plst resource, or an Info.plist file and drop it on PlistChecker. PlistChecker displays a report listing any problems it found.
What PListChecker does:
• Verifies the UTF-8 encoding.
• Reports any XML/plist parsing errors.
• Reports any undocumented top-level keys.
• Checks the types of the values for most documented keys, and keys within the CFBundleDocumentTypes array.
• Reports keys recommended by TN 2013 that are missing from the plist.
These checks are based on my understanding of what a plist should look like, and should not be taken as gospel. PListChecker does not examine InfoPlist.strings files. It requires Mac OS 9.0 or later.
Enhancements:
- There is now a preference dialog with a "verbose" option. With this unchecked, you get either only errors and warnings, or the text "** No problems found! **".
- Application names longer than 31 characters or containing Unicode characters are now displayed correctly.
- The window title now shows the version number after the application name.
- If there is no problem with the character encoding, the report does not mention it.
- The Cut, Clear, and Paste menu commands are disabled, since the report text is read-only.
- There is a Window menu.
- The menu item "About PListChecker" is not followed by an ellipsis.