cloudsuite_websearch failure

I got this error:

```
Dec 03, 2015 1:18:20 AM com.sun.faban.driver.engine.TimeThread doRun
SEVERE: SearchDriverAgent[0].11: Error initializing driver object.
java.lang.NullPointerException
at com.sun.org.apache.xml.internal.dtm.ref.dom2dtm.DOM2DTM.getLocalName(DOM2DTM.java:1035)
at com.sun.org.apache.xpath.internal.patterns.NodeTest.execute(NodeTest.java:578)
at com.sun.org.apache.xpath.internal.axes.PredicatedNodeTest.acceptNode(PredicatedNodeTest.java:472)
at com.sun.org.apache.xpath.internal.axes.AxesWalker.nextNode(AxesWalker.java:374)
at com.sun.org.apache.xpath.internal.axes.WalkingIterator.nextNode(WalkingIterator.java:197)
at com.sun.org.apache.xpath.internal.axes.NodeSequence.nextNode(NodeSequence.java:344)
at com.sun.org.apache.xpath.internal.axes.NodeSequence.item(NodeSequence.java:539)
at com.sun.org.apache.xpath.internal.objects.XNodeSet.str(XNodeSet.java:281)
at com.sun.org.apache.xpath.internal.jaxp.XPathImpl.getResultAsType(XPathImpl.java:309)
at com.sun.org.apache.xpath.internal.jaxp.XPathImpl.evaluate(XPathImpl.java:274)
at com.sun.org.apache.xpath.internal.jaxp.XPathImpl.evaluate(XPathImpl.java:363)
at com.sun.faban.driver.engine.DriverContext.getXPathValue(DriverContext.java:412)
at sample.searchdriver.SearchDriver.(SearchDriver.java:83)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at java.lang.Class.newInstance(Class.java:383)
at com.sun.faban.driver.engine.TimeThread.doRun(TimeThread.java:73)
at com.sun.faban.driver.engine.AgentThread.run(AgentThread.java:202)

Dec 03, 2015 1:18:21 AM com.sun.faban.driver.engine.AgentImpl kill
WARNING: SearchDriverAgent[0]: Killing benchmark run
Dec 03, 2015 1:18:21 AM com.sun.faban.driver.engine.MasterImpl$2 run
SEVERE: Run aborted. Master terminating!

```

I ran with these flags:

```
--machine_type=n1-standard-8
--zones=us-central1-c
--cloud=GCP
--benchmarks=cloudsuite_websearch
```