I'm not using Compiz. I first tried to run the program with  "./processing", but it complained of a bad JVM (even though ./java/bin/java is there). I installed it under /usr/local/processing-1.5.

Then I tried to force it to use its included JVM by running:

JAVA_HOME=/usr/local/processing-1.5/java PATH=/usr/local/processing-1.5/java/bin:$PATH ./processing

Now I don't get the JVM complaint. But the Display window doesn't appear, only the main window. If I try to run any Processing code, I get this:

Exception in thread "Thread-3" java.lang.Error: no Connectors loaded
    at com.sun.tools.jdi.VirtualMachineManagerImpl.<init>(VirtualMachineManagerImpl.java:141)
    at com.sun.tools.jdi.VirtualMachineManagerImpl.virtualMachineManager(VirtualMachineManagerImpl.java:65)
    at com.sun.jdi.Bootstrap.virtualMachineManager(Bootstrap.java:54)
    at processing.mode.java.runner.Runner.findConnector(Runner.java:454)
    at processing.mode.java.runner.Runner.launchVirtualMachine(Runner.java:261)
    at processing.mode.java.runner.Runner.launch(Runner.java:118)
    at processing.mode.java.JavaMode$1.run(JavaMode.java:181)
    at java.lang.Thread.run(Thread.java:662)

Help?