Sikuli Install Issues: No scripting support available

Hello,

I installed Sikuli 110 Offline Setup "sikulixsetup-1.1.0-20150527.231012-85-forsetup.jar".

With the following files in the same folder:
sikulixsetupIDE-1.1.0-20150527.231207-85-forsetup.jar
sikulixsetupAPI-1.1.0-20150527.231116-85-forsetup.jar
sikulixlibswin-1.1.0-20150527.230202-161.jar
sikulixlibsmac-1.1.0-20150527.230542-161.jar
sikulixlibslux-1.1.0-20150527.230737-161.jar
tesseract-ocr-3.02.eng.tar.gz
jython-standalone-2.7.0.jar

The System is a Windows 7 64x running with jre 8 update 45 and jdk 8 update 45.

I checked all three options and Jython (not JRuby), used the local copies and decided to go for jython27 . Installation went well until some point. It showed the message:

"Hallo from Sikulix.testSetup: Java API
SikuliX seems to be working!
Have fun!"

After that he tries some test for Jython Scripting - wait for the result popup:
But this never comes up. If i now try to run Sikuli there comes the message:
"Terminating: No scripting support available. Rerun Setup!"

I tried to apply this suggestion and rerun the Setup several times, over the old one and also some clean installations. It won't work, its every time the same error.

In the log file there is the following hint:
"ScriptingSupport: initScriptingSupport: warning: org.sikuli.scriptrunner.IScriptRunner: Provider org.sikuli.scriptrunner.JRubyScriptRunner could not be instantiated"

Please help! :)

Thanks in advance!

PS: I have read some stuff about "sikuli-script.jar", but i didn't found it on the nightly build page and it was not included in any installation guide. Might this be the solution?