selenium - IllegalStateException: java.lang.NumberFormatException - ATU ReportListener -

i error when try run testcases.but same code works fine in other machines.why error happened.how solve this.

java.lang.illegalstateexception: java.lang.numberformatexception: null @ atu.testng.reports.listeners.atureportslistener.onstart(unknown source) @ org.testng.suiterunner.invokelisteners(suiterunner.java:197) @ org.testng.suiterunner.run(suiterunner.java:238) @ org.testng.suiterunnerworker.runsuite(suiterunnerworker.java:52) @ org.testng.suiterunnerworker.run(suiterunnerworker.java:86) @ org.testng.testng.runsuitessequentially(testng.java:1198) @ org.testng.testng.runsuiteslocally(testng.java:1123) @ org.testng.testng.run(testng.java:1031) @ com.ibm.pmc.selenium.main.guitestmain.main(guitestmain.java:130) caused by: java.lang.numberformatexception: null @ java.lang.integer.parseint(unknown source) @ java.lang.integer.parseint(unknown source) @ atu.testng.reports.utils.settingsfile.correcterrors(unknown source) ... 9 more 

i've got same error , fixed in way ... try , must rid of exception

1. put atu.properties file in workspace , change path you've pointed properties

   {

   system.setproperty("atu.reporter.config",                    "e:\\fresh start\\practise concepts advanced\\atu.properties"); 

   }

2. you need create folder manually, want store result , set same thing in .properties file.

ex: u.reports.dir=e:/fresh start/practise concepts advanced/atu reporter

does make sense? please reply if need additional info.