Can't find the same problem, and can't run Processing on Windows XP SP2.
I've downloaded a pack with java, unpacked it, tried to start, but... nothing.
Splash screen is holding for a moment, than dissapears, and nothing happens.

I've tried version 1.0.7, then 1.0.6.

hardware: Intel Celeron 1200MHz, 256 mb RAM

here is my launch4j.log :

CmdLine: C:\processing-1.0.6\processing.exe --l4j-debug
WOW64: no
Working dir: C:\processing-1.0.6\.
Bundled JRE: java
Check launcher: C:\processing-1.0.6\java\bin\javaw.exe (OK)
Add classpath: lib\pde.jar
Add classpath: lib\core.jar
Add classpath: lib\jna.jar
Add classpath: lib\ecj.jar
Add classpath: lib\antlr.jar
Launcher: C:\processing-1.0.6\java\bin\javaw.exe
Launcher args: -Xms128m -Xmx128m -classpath
"lib;C:\processing-1.0.6\java\lib\tools.jar;lib\pde.jar;lib\core.jar;lib\jna.jar;lib\ecj.jar;lib\antlr.jar"
processing.app.Base
Args length: 156/32768 chars
Exit code: 1


Maybe i didn't installed Java or something?

Sorry for this question if it is too stupid, and thanks for help in advance.

Hm, not sure. You shouldn't have to install Java, you only need to download
the version that includes Java.

The two things I can think of are 1) try upgrading to XP SP3, we don't even
test with SP2, and 2) that 256 MB of RAM might not be enough. I'm not
certain, since I haven't tried running it on a machine with that little
RAM, but it seems pretty likely.

no followup, closing bug.