running SikuliX: -Xmx512M -Dfile.encoding=UTF-8 -Dsikuli.FromCommandLine
-jar ./sikulix.jar 
[info] runcmd: lsb_release -i -r -s 
[info] HotkeyManager: add Capture Hotkey: CTRL+SHIFT 2 (50, 3)
[info] HotkeyManager: add Abort Hotkey: ALT+SHIFT C (67, 9)
[error] RunTimeIDE:  *** terminating: JythonScriptRunner: cannot be initialized:
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/home/kit/install/sikulix/sikulix.jar/Lib/sikuli/__init__.py", line 6, in <module>
  File "/home/kit/install/sikulix/sikulix.jar/Lib/sikuli/Sikuli.py", line 59, in <module>
java.lang.ExceptionInInitializerError
	at java.lang.Class.forName0(Native Method)
	at java.lang.Class.forName(Class.java:348)
	at org.python.core.Py.loadAndInitClass(Py.java:991)
	at org.python.core.Py.findClassInternal(Py.java:926)
	at org.python.core.Py.findClassEx(Py.java:977)
	at org.python.core.packagecache.SysPackageManager.findClass(SysPackageManager.java:133)
	at org.python.core.packagecache.PackageManager.findClass(PackageManager.java:33)
	at org.python.core.packagecache.SysPackageManager.findClass(SysPackageManager.java:122)
	at org.python.core.PyJavaPackage.__findattr_ex__(PyJavaPackage.java:134)
	at org.python.core.PyObject.__findattr__(PyObject.java:946)
	at org.python.core.imp.importFromAs(imp.java:1160)
	at org.python.core.imp.importFrom(imp.java:1132)
	at sikuli.Sikuli$py.f$0(/home/kit/install/sikulix/sikulix.jar/Lib/sikuli/Sikuli.py:513)
	at sikuli.Sikuli$py.call_function(/home/kit/install/sikulix/sikulix.jar/Lib/sikuli/Sikuli.py)
	at org.python.core.PyTableCode.call(PyTableCode.java:167)
	at org.python.core.PyCode.call(PyCode.java:18)
	at org.python.core.imp.createFromCode(imp.java:436)
	at org.python.core.util.importer.importer_load_module(importer.java:109)
	at org.python.modules.zipimport.zipimporter.zipimporter_load_module(zipimporter.java:163)
	at org.python.modules.zipimport.zipimporter$zipimporter_load_module_exposer.__call__(Unknown Source)
	at org.python.core.PyBuiltinMethodNarrow.__call__(PyBuiltinMethodNarrow.java:46)
	at org.python.core.imp.loadFromLoader(imp.java:587)
	at org.python.core.imp.find_module(imp.java:537)
	at org.python.core.PyModule.impAttr(PyModule.java:106)
	at org.python.core.imp.import_next(imp.java:842)
	at org.python.core.imp.import_module_level(imp.java:959)
	at org.python.core.imp.importName(imp.java:1062)
	at org.python.core.ImportFunction.__call__(__builtin__.java:1280)
	at org.python.core.PyObject.__call__(PyObject.java:431)
	at org.python.core.__builtin__.__import__(__builtin__.java:1232)
	at org.python.core.imp.importAll(imp.java:1182)
	at sikuli$py.f$0(/home/kit/install/sikulix/sikulix.jar/Lib/sikuli/__init__.py:6)
	at sikuli$py.call_function(/home/kit/install/sikulix/sikulix.jar/Lib/sikuli/__init__.py)
	at org.python.core.PyTableCode.call(PyTableCode.java:167)
	at org.python.core.PyCode.call(PyCode.java:18)
	at org.python.core.imp.createFromCode(imp.java:436)
	at org.python.core.util.importer.importer_load_module(importer.java:109)
	at org.python.modules.zipimport.zipimporter.zipimporter_load_module(zipimporter.java:163)
	at org.python.modules.zipimport.zipimporter$zipimporter_load_module_exposer.__call__(Unknown Source)
	at org.python.core.PyBuiltinMethodNarrow.__call__(PyBuiltinMethodNarrow.java:46)
	at org.python.core.imp.loadFromLoader(imp.java:587)
	at org.python.core.imp.find_module(imp.java:537)
	at org.python.core.imp.import_next(imp.java:840)
	at org.python.core.imp.import_module_level(imp.java:959)
	at org.python.core.imp.importName(imp.java:1062)
	at org.python.core.ImportFunction.__call__(__builtin__.java:1280)
	at org.python.core.PyObject.__call__(PyObject.java:431)
	at org.python.core.__builtin__.__import__(__builtin__.java:1232)
	at org.python.core.imp.importAll(imp.java:1182)
	at org.python.pycode._pyx0.f$0(<string>:1)
	at org.python.pycode._pyx0.call_function(<string>)
	at org.python.core.PyTableCode.call(PyTableCode.java:167)
	at org.python.core.PyCode.call(PyCode.java:18)
	at org.python.core.Py.runCode(Py.java:1386)
	at org.python.core.Py.exec(Py.java:1430)
	at org.python.util.PythonInterpreter.exec(PythonInterpreter.java:267)
	at org.sikuli.scriptrunner.JythonScriptRunner.init(JythonScriptRunner.java:129)
	at org.sikuli.scriptrunner.ScriptingSupport.init(ScriptingSupport.java:286)
	at org.sikuli.ide.SikuliIDE.run(SikuliIDE.java:325)
	at org.sikuli.ide.Sikulix.main(Sikulix.java:25)
Caused by: org.sikuli.natives.CommandExecutorException: [error] [error] checking: command 'wmctrl' is not executable, please check if it is installed and available!
	at org.sikuli.natives.LinuxUtil.checkLibAvailability(LinuxUtil.java:51)
	at org.sikuli.script.App.<clinit>(App.java:50)
	... 60 more

java.lang.ExceptionInInitializerError: java.lang.ExceptionInInitializerError