help info

1. What OS are you using (Brand and version - Ex. Windows XP SP3)?
windows xp service pack 3
2. What architecture is the OS you are running (x64 or x86)?
x86
3. What version and architecture is your java install? (Type: java -version in command prompt.)
1.7 (v7)
4. Are you running any wrappers? McMyAdmin, mcadmin, Hamachi, etc?
only a GUI and the error occurs even without the GUI
5. What build of CraftBukkit are you running? (do NOT say latest. Say the build number.)
The build number is displayed in the top of the server.log.
craftbukkit-1.2.5-R1.0
6. What command are you using to run your CraftBukkit server?
@Echo OFF
SET BINDIR=%~dp0
CD /D "%BINDIR%"
"%ProgramFiles%\Java\jre7\bin\java.exe" -Xmx1024M -Xms1024M -jar craftbukkit-1.2.5-R1.0.jar
PAUSE