java.lang.NoClassDefFoundError:com.eviware.soapui.SoapUI 361

We are using soapUI 3.6.1 on linux. Getting following error:

[root@iris2:~]# /usr/local/eviware3.6.1/soapui-pro-3.6.1/bin/testrunner.sh -I -r -f/usr/local/eviware3.6.1/soapui-pro-3.6.1/bin/automation/results /usr/local/eviware3.6.1/soapui-pro-3.6.1/bin/automation/soapProjects/A11-Registration-post-A11-Registration.pcap.xml
================================
=
= SOAPUI_HOME = /usr/local/eviware3.6.1/soapui-pro-3.6.1
=
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soapUI Pro 3.6.1 TestCase Runner
Exception in thread "main" java.lang.NoClassDefFoundError: com.eviware.soapui.SoapUI
at java.lang.Class.initializeClass(libgcj.so.7rh)
at com.eviware.soapui.support.log.SoapUIAppender.append(SoapUIAppender.java:34)
at org.apache.log4j.AppenderSkeleton.doAppend(AppenderSkeleton.java:230)
at org.apache.log4j.helpers.AppenderAttachableImpl.appendLoopOnAppenders(AppenderAttachableImpl.java:65)
at org.apache.log4j.Category.callAppenders(Category.java:203)
at org.apache.log4j.Category.forcedLog(Category.java:388)
at org.apache.log4j.Category.error(Category.java:302)
at com.eviware.soapui.tools.AbstractSoapUIRunner.runFromCommandLine(AbstractSoapUIRunner.java:90)
at com.eviware.soapui.SoapUIProTestCaseRunner.main(SourceFile:48)