I almost never run World Book 2003 on my 800 Mhz G3 iBook, but I needed to look something up so I tried to run it about a week ago. It started up, and then "unexpectedly quit." This was in 10.3.4. Then I upgraded to 10.3.5. No difference. I trashed World Book's preferences folder and restarted. No difference. I used the Software Restore discs to re-install the programs and restarted. No difference. For the record, Console says: 2004-08-15 20:58:36.976 World Book An uncaught exception was raised 2004-08-15 20:58:36.977 World Book *** -[NSCFDictionary setObject:forKey:]: attempt to insert nil value 2004-08-15 20:58:36.977 World Book *** Uncaught exception: <NSInvalidArgumentException> *** -[NSCFDictionary setObject:forKey:]: attempt to insert nil value What does this mean? I'm running 640 Mb RAM and I never have more than three or four applications open. Even if World Book is the only application, it still quits. Any smart people out there who can tell me how to fix this problem?