Hey, found a bug. this report should help fixing it:

the IDE crashes when you change your color scheme in windows. I had
HighContrast#1 and this gave me a real headache because there was no
verbose or console tracking when launching the IDE. it just sometimes threw
this alert:
virtual machine launcher
fatal error occured. program will exit.

and the launch4j.log didn't say anything clear.

arduino IDE have the same crash but when I launch it with run.bat, the DOS
console said:

Exception in thread "main" java.lang.StringIndexOutOfBoundsException:
String ind
ex out of range: -1
at java.lang.String.substring(Unknown Source)
at java.lang.String.substring(Unknown Source)
at processing.app.Preferences.setColor(Preferences.java:795)
at processing.app.Preferences.init(Preferences.java:185)
at processing.app.Editor.<init>(Editor.java:163)
at processing.app.Base.<init>(Base.java:149)
at processing.app.Base.main(Base.java:104)
Press any key to continue . . .

so there is a string not taken into account there. apparently on
Prefences.setColor() or something like that.

found a clarifying thread in the arduino forum:
http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1232148583

thanks.

are you using 1.0.3? i thought we had fixed this.

(In reply to comment #1)
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> Additional Comment #1 From
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> fry
> 2009-05-02 11:45
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> are you using 1.0.3? i thought we had fixed this.
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These were my tests:

(versions with java)
0121 crashed
0124 crashed
0125 crashed
0135 ok
0148 ok
0157 crashed
1.0.3 crashed
(version without java)
1.0-expert crashed

ah, changed it in one place and not the other. fixed for the next release,
thanks for the report.

(next release should be 1.0.4.)