Ok, i know that probably is my fault, maybe change something on my mac 10.9... but i can't run epubcheck now.
This is the message:
XXX:~ XXXXX$ java -jar/Applications/epubcheck-v4.0.0-alpha4/epubcheck.jar
Unrecognized option: -jar/Applications/epubcheck-v4.0.0-alpha4/epubcheck.jar
Could not create the Java virtual machine.
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