Error Parsing Patient Search

[mooredynasty]

When including the reference client in a Grails project I'm able to get the .read method to return a single Patient but when asking the client to do a .search on Patient, I get an exception here:

NoSuchMethodError: org.hl7.fhir.instance.formats.Parser.parseGeneral(Ljava/io/InputStream;)Lorg/hl7/fhir/instance/formats/ParserBase$ResourceOrFeed;
->> 333 | unmarshalFeed in org.hl7.fhir.client.ClientUtils

Has anyone reported this error before?

Looking at the pom.xml I see that commons.io version 1.2 is called for, whereas Grails is providing version 2.2. Could this be the source of the problem? (I'm a Java noob, I'm afraid.) Can the client library be updated to use the newer version?