[Freecol-developers] double clickable java bundle for mac os x

[Tobias B. <tb...@cl...>]

Hi.

Im trying to build a double clickable java bundle for mac os x.  
Therefore I have created another ant-task. But after executing  
FreeCol, the following exception will be thrown:

Exception in thread "main" java.lang.UnsupportedClassVersionError:  
net/sf/freecol/FreeCol (Unsupported major.minor version 49.0)
	at java.lang.ClassLoader.defineClass0(Native Method)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:539)
	at java.security.SecureClassLoader.defineClass 
(SecureClassLoader.java:123)
	at java.net.URLClassLoader.defineClass(URLClassLoader.java:251)
	at java.net.URLClassLoader.access$100(URLClassLoader.java:55)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:194)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:187)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:289)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:274)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:235)
	at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302)
	at java.lang.Class.forName0(Native Method)
	at java.lang.Class.forName(Class.java:219)
	at apple.launcher.LaunchRunner.loadMainMethod(LaunchRunner.java:55)
	at apple.launcher.LaunchRunner.run(LaunchRunner.java:84)
	at apple.launcher.LaunchRunner.callMain(LaunchRunner.java:50)
	at apple.launcher.JavaApplicationLauncher.launch 
(JavaApplicationLauncher.java:52)

Am I doing something wrong when executing ant dist? The number I have  
entered was: 0.5.3, 0.5.4 or nothing.

Thanks in advance for help.
Tobias