LoadUI (2.1.2) command line results in empty workspace file

Our load ui project works fine under windows. We we move the project to Linux, the LoadUI is failing:

16:27:14,323 ERROR [CommandRunner] An error occured when executing the script
java.lang.RuntimeException: org.apache.xmlbeans.XmlException: /usr/local/hudson/tmp/workspace9053006420532603783xml:1:1: error: Unexpected end of file after null
 at com.eviware.loadui.impl.model.WorkspaceProviderImpl.loadWorkspace(WorkspaceProviderImpl.java:60)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
 at java.lang.reflect.Method.invoke(Method.java:601)
 at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:318)
 at org.springframework.osgi.service.importer.support.internal.aop.ServiceInvoker.doInvoke(ServiceInvoker.java:58)
 at org.springframework.osgi.service.importer.support.internal.aop.ServiceInvoker.invoke(ServiceInvoker.java:62)
 at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
 at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)
 at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)
 at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
 at org.springframework.osgi.service.util.internal.aop.ServiceTCCLInterceptor.invokeUnprivileged(ServiceTCCLInterceptor.java:56)
 at org.springframework.osgi.service.util.internal.aop.ServiceTCCLInterceptor.invoke(ServiceTCCLInterceptor.java:39)
 at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
 at org.springframework.osgi.service.importer.support.LocalBundleContextAdvice.invoke(LocalBundleContextAdvice.java:59)
 at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
 at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)
 at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)
 at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
 at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
 at com.sun.proxy.$Proxy7.loadWorkspace(Unknown Source)

The file "/usr/local/hudson/tmp/workspace9053006420532603783xml" exists, but it is empty. Is this a bug?

We are running LoadUI 2.1.2, the commands that are execute are:

[workspace] $ /bin/sh -xe /opt/apache-tomcat-6.0.20/temp/hudson844704915677978879.sh
+ cd /opt/loadUI-2.1.2
+ sh -x loadUI-cmd.sh -p /usr/local/hudson/hudson-home/jobs/MKE_Endurance/workspace/endurance/KIM_Endurance.loadtest -nofx -l -F PDF -s -r /usr/local/hudson/hudson-home/jobs/MKE_Endurance/workspace/ -Dsoapui.properties=/usr/local/hudson/hudson-home/jobs/MKE_Endurance/workspace/soapui-properties/soapui_fin.properties -Dloadui.msl.globals.loadFactor=1 -L 10:0:0
++ dirname loadUI-cmd.sh
+ DIRNAME=.
+ cygwin=false
+ case "`uname`" in
++ uname
+ '[' x = x ']'
++ cd ./
++ pwd
+ LOADUI_HOME=/opt/loadUI-2.1.2
+ export LOADUI_HOME
+ LOADUI_CLASSPATH='/opt/loadUI-2.1.2:/opt/loadUI-2.1.2/lib/*'
+ false
+ JAVA=/opt/java/bin/java
+ JAVA_OPTS='-Xms128m -Xmx768m -XX:MaxPermSize=128m -Djava.awt.headless=true'
+ /opt/java/bin/java -Xms128m -Xmx768m -XX:MaxPermSize=128m -Djava.awt.headless=true -cp '/opt/loadUI-2.1.2:/opt/loadUI-2.1.2/lib/*' com.eviware.loadui.launcher.LoadUICommandLineLauncher -p /usr/local/hudson/hudson-home/jobs/MKE_Endurance/workspace/endurance/KIM_Endurance.loadtest -nofx -l -F PDF -s -r /usr/local/hudson/hudson-home/jobs/MKE_Endurance/workspace/ -Dsoapui.properties=/usr/local/hudson/hudson-home/jobs/MKE_Endurance/workspace/soapui-properties/soapui_fin.properties -Dloadui.msl.globals.loadFactor=1 -L 10:0:0
Picked up _JAVA_OPTIONS: -Djava.io.tmpdir=/usr/local/hudson/tmp

Anyone an idea, why we get this error under Linux?