Epubcheck Version 3.0.1

-help displays help
java.lang.RuntimeException: For files other than epubs, mode must be specified! Default version is 3.0.
	at com.adobe.epubcheck.tool.Checker.processArguments(Checker.java:386)
	at com.adobe.epubcheck.tool.Checker.run(Checker.java:188)
	at com.adobe.epubcheck.tool.Checker.main(Checker.java:182)
