NullPointerException on soapui rest testcase having template

Hi Team,

I have a Geo TestSuite created using a rest wadl file in soap ui 5.0.0.The Test Step under PostalCodes/{PostalCode} TestCase throws a null pointer exception. I am able to test the other test cases and they work fine. Only the mentioned test case uses the template based resource uri and hence throwing the below error. Can anyone please provide pointers on this issue? Attached image for reference.

Detail Log,

ERROR [errorlog] java.lang.NullPointerException
java.lang.NullPointerException
at java.util.regex.Matcher.appendReplacement(Unknown Source)
at java.util.regex.Matcher.replaceAll(Unknown Source)
at java.lang.String.replaceAll(Unknown Source)
at com.eviware.soapui.impl.rest.support.RestUtils.expandPath(RestUtils.java:257)