Script1.groovy: 3: unable to resolve class org.apache.commons.net.ftp.FTPClient @ line 3, column 1

I am using the SoapUI 5.2.1 to run a FTP related test case. The following script worked fine in my window 7, the it failed if I ran it on windows 8.1 Pro. Not sure why?

 

import org.apache.commons.net.ftp.FTP;
import org.apache.commons.net.ftp.FTPClient;
import org.apache.commons.net.ftp.FTPConnectionClosedException;
//import org.apache.commons.net.ftp.*    (tried this, but still see the error for FTPClient)

new FTPClient().with {
connect "172.16.5.180"
log.info replyString
login "anonymous",""
log.info replyString
changeWorkingDirectory("files/");
files = listFiles(".")
context.mTime="19700101000000"

for (myfiles in files) {
if(myfiles.getName() =~ "trouble_report.tgz") {
context.mTime = getModificationTime(myfiles.getName())
log.info "Found file, modified : " + context.mTime;
}
}

disconnect();
return context.mTime
}

 

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Below is the output error messages:

org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed: Script3.groovy: 2: unable to resolve class org.apache.commons.net.ftp.FTP
@ line 2, column 1. import org.apache.commons.net.ftp.FTP; ^ org.codehaus.groovy.syntax.SyntaxException: unable to resolve class org.apache.commons.net.ft
p.FTP @ line 2, column 1. at org.codehaus.groovy.ast.ClassCodeVisitorSupport.addError(ClassCodeVisitorSupport.java:146) at org.codehaus.groovy.control.Res
olveVisitor.visitClass(ResolveVisitor.java:1145) at org.codehaus.groovy.control.ResolveVisitor.startResolving(ResolveVisitor.java:141) at org.codehaus.gro
ovy.control.CompilationUnit$10.call(CompilationUnit.java:632) at org.codehaus.groovy.control.CompilationUnit.applyToSourceUnits(CompilationUnit.java:912)
at org.codehaus.groovy.control.CompilationUnit.doPhaseOperation(CompilationUnit.java:574) at org.codehaus.groovy.control.CompilationUnit.compile(Compilati
onUnit.java:523) at groovy.lang.GroovyClassLoader.doParseClass(GroovyClassLoader.java:279) at groovy.lang.GroovyClassLoader.parseClass(GroovyClassLoader.j
ava:258) at groovy.lang.GroovyShell.parseClass(GroovyShell.java:613) at groovy.lang.GroovyShell.parse(GroovyShell.java:625) at groovy.lang.GroovyShell.par
se(GroovyShell.java:652) at groovy.lang.GroovyShell.parse(GroovyShell.java:643) at com.eviware.soapui.support.scripting.groovy.SoapUIGroovyScriptEngine.co
mpile(SoapUIGroovyScriptEngine.java:138) at com.eviware.soapui.support.scripting.groovy.SoapUIGroovyScriptEngine.run(SoapUIGroovyScriptEngine.java:89) at
com.eviware.soapui.impl.wsdl.teststeps.WsdlGroovyScriptTestStep.run(WsdlGroovyScriptTestStep.java:141) at com.eviware.soapui.impl.wsdl.panels.teststeps.Gr
oovyScriptStepDesktopPanel$RunAction$1.run(GroovyScriptStepDesktopPanel.java:250) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at
java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source) Script3.groovy: 3: unable to resolve class org.
apache.commons.net.ftp.FTPClient @ line 3, column 1. import org.apache.commons.net.ftp.FTPClient

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What maybe wrong?

 

Thank you,

 

Susan