Failed to Load Main-Class

Hi,

Setting up a new server on a CentOS (64bit) install,

Java is updated to the most recent,

However, when I try to launch with: java -jar -Xmx4096M -Xms-4096M craftbukkit-1.0.1-R1.jar nogui

I get the error: Failed to load Main-Class maifest attribute from craftbukkit-1.0.1-R1.jar