I was testing the Jazzy JTextComponentSpellCheckExample (Jazzy 0.5.2 as well as an earlier version). When I delete the first character in the textpane and invoke the "Spell" buton, I get the following trace
at com.swabunga.spell.engine.DoubleMeta.transform(Unknown Source)
at com.swabunga.spell.engine.SpellDictionaryASpell.getCode(Unknown Sourc
at com.swabunga.spell.engine.SpellDictionaryHashMap.isCorrect(Unknown So
at com.swabunga.spell.event.SpellChecker.isCorrect(Unknown Source)
at com.swabunga.spell.event.SpellChecker.checkSpelling(Unknown Source)
If I delete any other place, there are no errors and the spell check works like a charm.
I've been investigating this problem and I have found the same problem. But I get another exception from the getNextWordStart in the DocumentWordTokenizer class are you sure your Exception is from the current 0.5.2 code?
Anyway I have made an attempt to solve this problem in the current code and this fix is now in CVS. Please try it out to make sure I haven't stupidly broken anything else (I have ofcourse tested it myself but you never know).
Hope this will help you