Soapui not starting on Ubuntu 15.04

I've got an issue with trying to get Soapui to work on Ubuntu 15.04. I've tried several installer versions (5.1.2, 5.1.3 and 5.2.0-beta) and also the tarred linux version 5.1.3. They all get the same problem though.

When I start up, I get first the question on whether I want to share statistics with Smartbear. After answering this, soapui seems to start up, adn I get a pop-up asking me whether I want to stay in the loop (by providing an email address).

No matter what my answers are, it results in soapui closing down.

The console logging is the following:

Picked up JAVA_TOOL_OPTIONS: -javaagent:/usr/share/java/jayatanaag.jar 
================================
=
= SOAPUI_HOME = /home/fverhoef/apps/SoapUI-5.1.3
=
================================
Picked up JAVA_TOOL_OPTIONS: -javaagent:/usr/share/java/jayatanaag.jar 
Configuring log4j from [/home/fverhoef/apps/SoapUI-5.1.3/bin/soapui-log4j.xml]
12:28:42,905 INFO  [DefaultSoapUICore] Creating new settings at [/home/fverhoef/soapui-settings.xml]
Configuring log4j from [/home/fverhoef/apps/SoapUI-5.1.3/bin/soapui-log4j.xml]
12:28:43,635 INFO  [DefaultSoapUICore] Creating new settings at [/home/fverhoef/soapui-settings.xml]
12:28:43,739 WARN  [AnalyticsManager] Error generating Analytics session ID - returning empty String
java.lang.NullPointerException
	at com.eviware.soapui.analytics.AnalyticsManager.makeUserId(AnalyticsManager.java:140)
	at com.eviware.soapui.analytics.AnalyticsManager.<init>(AnalyticsManager.java:30)
	at com.eviware.soapui.analytics.AnalyticsManager.getInstance(AnalyticsManager.java:35)
	at com.eviware.soapui.analytics.Analytics.getAnalyticsManager(Analytics.java:16)
	at com.eviware.soapui.analytics.AnalyticsHelper.InitializeAnalytics(AnalyticsHelper.java:39)
	at com.eviware.soapui.SoapUI.startSoapUI(SoapUI.java:803)
	at com.eviware.soapui.SoapUI$SoapUIRunner.run(SoapUI.java:671)
	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:756)
	at java.awt.EventQueue.access$500(EventQueue.java:97)
	at java.awt.EventQueue$3.run(EventQueue.java:709)
	at java.awt.EventQueue$3.run(EventQueue.java:703)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:726)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)
java.lang.NullPointerException
	at com.eviware.soapui.analytics.providers.GoogleAnalyticsProvider.getMacAddressString(GoogleAnalyticsProvider.java:99)
	at com.eviware.soapui.analytics.providers.GoogleAnalyticsProvider.buildParametersString(GoogleAnalyticsProvider.java:73)
	at com.eviware.soapui.analytics.providers.GoogleAnalyticsProvider.trackAction(GoogleAnalyticsProvider.java:48)
	at com.eviware.soapui.analytics.AnalyticsManager$3.run(AnalyticsManager.java:167)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)
12:28:45,691 INFO  [SoapUI] Used java version: 1.8.0_45
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  SIGSEGV (0xb) at pc=0x00007f63229596cd, pid=4499, tid=140061913999104
#
# JRE version: Java(TM) SE Runtime Environment (8.0_45-b14) (build 1.8.0_45-b14)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (25.45-b02 mixed mode linux-amd64 compressed oops)
# Problematic frame:
# V  [libjvm.so+0x89d6cd]  Method::build_method_counters(Method*, Thread*)+0x2d
#
# Failed to write core dump. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again
#
# An error report file with more information is saved as:
# /home/fverhoef/apps/SoapUI-5.1.3/bin/hs_err_pid4499.log
#
# If you would like to submit a bug report, please visit:
#   http://bugreport.java.com/bugreport/crash.jsp
#

Attached I've also 2 of the logging files created by soapui. 

-- Correction: it seems this forum doesn't accept my attachments for some reason. I do have the following log files to share:hs_err_pid4499.log and soapui.log

Could it be that Soapui doesn't work well with Java 8?