When I try to run Kojo from the command line on Ubuntu 15.04, it hangs forever on the loading splash screen. I've tried it with Java 8 and Java 7, and with OpenJDK and the Oracle JRE.
On the console, I see this:
./kojo
Picked up JAVA_TOOL_OPTIONS: -javaagent:/usr/share/java/jayatanaag.jar
[INFO] Running first Kojo instance with args: []
[INFO] Java Home: /opt/jre1.8.0_45
Picked up JAVA_TOOL_OPTIONS: -javaagent:/usr/share/java/jayatanaag.jar
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option PermSize=32m; support was removed in 8.0
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=256m; support was removed in 8.0
[INFO] Logging has been redirected to: /home/daddy/.kojo/lite/log/kojo0.logException: java.lang.NullPointerException thrown from the UncaughtExceptionHandler in thread "AWT-EventQueue-0"
The above is for the Oracle JRE for Java 8, but there are only slight variations with other versions. The NPE at the bottom appears in all cases, and I suspect that it's at the root of the problem.
In the log, I see only a listing of the system properties, followed by this, which mirrors what I saw in the console:
[Sat Jul 11 22:33:53 EDT 2015, CodeExecutionSupport] SEVERE: stderr> Exception in thread "AWT-EventQueue-0"
[Sat Jul 11 22:33:53 EDT 2015, CodeExecutionSupport] SEVERE: stderr> Exception in thread "AWT-EventQueue-0"
Since there is no stack trace attached to the exception, I can't even venture a guess as to what the problem could be.