Problem in basic code execution as external library

[igrangel]

When I try to execute the code you provide in the readme I got the following error:

SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
SLF4J: Actual binding is of type [ch.qos.logback.classic.util.ContextSelectorStaticBinder]
null
java.io.FileNotFoundException: null
	at be.ugent.rml.Utils.getFile(Utils.java:138)
	at be.ugent.rml.Utils.getFile(Utils.java:89)
	at be.ugent.rml.functions.FunctionLoader.<init>(FunctionLoader.java:57)
	at be.ugent.rml.functions.FunctionLoader.<init>(FunctionLoader.java:47)
	at be.ugent.rml.Initializer.<init>(Initializer.java:28)
	at be.ugent.rml.Executor.<init>(Executor.java:47)
	at be.ugent.rml.Executor.<init>(Executor.java:39)
	at Main.main(Test.java:30)

As for the mappings I have tested them with the standalone jar and they run correctly. I have imported the same jar as well as the Jena Libraries.