saxat från macosxcocktail.com blog sida:
Help the Help Viewer
Help Viewer is probably the buggiest application that comes with Mac OS X. On some systems it does not list Help for many applications, displays a blank window or just quit unexpectedly. What can you do if it happens to you?
Troubleshoot the cache:
• From the Finder's Go menu, choose Home
• Open the Library folder
• Open the Caches folder
• Look for the com.apple.helpui folder
• Delete that folder
Troubleshoot the preferences:
• From the Finder's Go menu, choose Home
• Open the Library folder.
• Open the Preferences folder
• Delete these files: com.apple.help.plist, com.apple.helpui.plist and com.apple.helpviewer.plist
Troubleshoot for a problematic Help book:
• From the Finder's Go menu, choose Home
• Open the Library folder
• Open the Documentation folder
• Open the Help folder
• Double-click each Help book (one at a time) to open Help Viewer
• When you find one that makes Help Viewer quit unexpectedly, delete it
Update the software:
• Update your system to Mac OS X 10.3.5 or later
• If you are using Palm Desktop 4.0, upgrade to Palm Desktop version 4.1
The problems listed above are only the few reasons why Cocktail have its own built-in help viewer. We really hope that Apple will fix Help Viewer bugs in Mac OS X 10.4 and you will be use it to read Cocktail (Tiger Edition) documentation.