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    Take a look at this blog post on how to set up Grid2 https://goo.gl/rxzbE6. A user related (in the email group on the source) that using older selenium libs solves this exception.

java.lang.NullPointerException: null	at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:210)	at com.vmware.photon.controller.deployer.DeployerConfig.getImageFile(DeployerConfig.java:110)	at com.vmware.photon.controller.deployer.DeployerConfig.getManagementImageFile(DeployerConfig.java:98)	at com.vmware.photon.controller.deployer.service.client.DeploymentWorkFlowServiceClient.create(DeploymentWorkFlowServiceClient.java:90)	at com.vmware.photon.controller.deployer.service.DeployerService.deploy(DeployerService.java:355)	at com.vmware.photon.controller.deployer.gen.Deployer$Processor$deploy.getResult(Deployer.java:1513)	at com.vmware.photon.controller.deployer.gen.Deployer$Processor$deploy.getResult(Deployer.java:1498)	at org.apache.thrift.ProcessFunction.process(ProcessFunction.java:39)	at org.apache.thrift.TBaseProcessor.process(TBaseProcessor.java:39)	at org.apache.thrift.TMultiplexedProcessor.process(TMultiplexedProcessor.java:123)	at org.apache.thrift.server.TThreadPoolServer$WorkerProcess.run(TThreadPoolServer.java:286)	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)	at java.lang.Thread.run(Thread.java:745)