Sun's website notes that some javaw.exe Application Errors can be
caused by font problems within Windows. The "Fonts" folder in Windows
is rather sensitive and if it is set up incorrectly, it can cause
system-wide problems that affect javaw.exe.
If you get this error, check your Windows\Fonts\ (or Winnt\Fonts\)
folder. You're looking for shortcuts to other font files. The "Fonts"
folder should only contain regular font files. Shortcuts to font
files in other locations will cause problems in the folder. If you
find a shortcut to a font file, locate the font file it is pointing
to and copy that font to the "Fonts" folder. Then delete the shortcut.
Do this for every shortcut you find in "Fonts". Then reboot the computer
and try to Run JBuilder again.
If that doesn't work you can try some more drastic troubleshooting techniques.
In some situations, simply "opening" each font file can fix this problem.
If all else fails, back up your font files to a safe location and delete them from the Fonts directory. Add each font file back in to the Fonts directory, one at a time, and try JBuilder. If you get the javaw error, then you know the font you just added is causing the problem.
Happy Coding!