ERROR REPORT: GUI not starting with launch4j error on Polish computers

Development Tools IDE 1.x
1
  1. The latest version 1.0.1 of the GUI does not start - at least when the computer's locale is Polish (didn't try other languages).
    It reports launch4j error: An Error occured while starting the application". Starting with an option --debug-

Workaround:
step a) kill all instances of javaw.exe (if you did try to launch application after restarting windows and got the above error)
step b) look for the file arduino-1.0.1\lib\preferences.txt, ignore the warning tha you shouldnt edit the file, edit it replacing
editor.languages.current =
to
editor.languages.current = en
step c) delete another copy of preferences.txt file as suggested in this post:

On Windows7 hosts it sits under users\USERNAME\AppData\Roaming\Arduino

Gui should start.

  1. DO NOT change language in preferences to Polish. It will cause the above symptoms to reappear.
2

There are some issues with the languages, there is another bug with the serial monitor ("bauds" word), did you tested the 1.0.2?

Another workaround is to use this mod:
http://arduino.cc/forum/index.php/topic,118440.0.html

It defaults to English language and uses another settings file to not screw your official IDE