title: jMeter java.lang.IllegalArgumentException: File example.csv must exist and be readable
body: <p>I updated jMeter 2.9 to 3.2 and having issues with old test cases. When I open .jmx file with jMeter 2.9 all tests runs smoothly, but when using version 3.2 from same location I get a message: The file jmeter-results.xml already exists, what do you want to do? Append to existing file - Don't start - Overwrite existing file.
  Doesn't matter what I choose, it doesn't work.</p>
  
  <p>Log file:</p>
  
  <pre><code>2017-07-28 11:55:20,458 INFO o.a.j.e.StandardJMeterEngine: Running the test!
  2017-07-28 11:55:20,458 INFO o.a.j.s.SampleEvent: List of sample_variables: 
  []
  2017-07-28 11:55:20,474 INFO o.a.j.g.u.JMeterMenuBar: setRunning(true, 
  *local*)
  2017-07-28 11:55:20,567 INFO o.a.j.e.StandardJMeterEngine: Starting 
  ThreadGroup: 1 : JMeter Users
  2017-07-28 11:55:20,567 INFO o.a.j.e.StandardJMeterEngine: Starting 1 
  threads for group JMeter Users.
  2017-07-28 11:55:20,567 INFO o.a.j.e.StandardJMeterEngine: Thread will 
  continue on error
  2017-07-28 11:55:20,567 INFO o.a.j.t.ThreadGroup: Starting thread group... 
  number=1 threads=1 ramp-up=5 perThread=5000.0 delayedStart=false
  2017-07-28 11:55:20,567 INFO o.a.j.t.ThreadGroup: Started thread group 
  number 1
  2017-07-28 11:55:20,567 INFO o.a.j.e.StandardJMeterEngine: All thread groups 
  have been started
  2017-07-28 11:55:20,583 INFO o.a.j.t.JMeterThread: Thread started: JMeter 
  Users 1-1
  2017-07-28 11:55:20,583 INFO o.a.j.s.FileServer: Stored: testdata/test.csv
  2017-07-28 11:55:20,583 ERROR o.a.j.t.JMeterThread: Test failed!
  java.lang.IllegalArgumentException: File test.csv must exist and be readable
  at org.apache.jmeter.services.FileServer.createBufferedReader(FileServer.java:430) ~[ApacheJMeter_core.jar:3.2 r1790748]
  at org.apache.jmeter.services.FileServer.getReader(FileServer.java:396) ~[ApacheJMeter_core.jar:3.2 r1790748]
  at org.apache.jmeter.services.FileServer.getParsedLine(FileServer.java:378) ~[ApacheJMeter_core.jar:3.2 r1790748]
  at org.apache.jmeter.config.CSVDataSet.iterationStart(CSVDataSet.java:200) ~[ApacheJMeter_components.jar:3.2 r1790748]
  at org.apache.jmeter.control.GenericController.fireIterationStart(GenericController.java:393) ~[ApacheJMeter_core.jar:3.2 r1790748]
  at org.apache.jmeter.control.GenericController.fireIterEvents(GenericController.java:385) ~[ApacheJMeter_core.jar:3.2 r1790748]
  at org.apache.jmeter.control.GenericController.next(GenericController.java:158) ~[ApacheJMeter_core.jar:3.2 r1790748]
  at org.apache.jmeter.control.LoopController.next(LoopController.java:123) ~[ApacheJMeter_core.jar:3.2 r1790748]
  at org.apache.jmeter.threads.AbstractThreadGroup.next(AbstractThreadGroup.java:87) ~[ApacheJMeter_core.jar:3.2 r1790748]
  at org.apache.jmeter.threads.JMeterThread.run(JMeterThread.java:252) [ApacheJMeter_core.jar:3.2 r1790748]
  at java.lang.Thread.run(Unknown Source) [?:1.8.0_141]
  2017-07-28 11:55:20,583 INFO o.a.j.t.JMeterThread: Thread finished: JMeter 
  Users 1-1
  2017-07-28 11:55:20,583 INFO o.a.j.e.StandardJMeterEngine: Notifying test 
  listeners of end of test
  2017-07-28 11:55:20,583 INFO o.a.j.g.u.JMeterMenuBar: setRunning(false, 
  *local*)
  </code></pre>