Hello,

I cannot do any backtests after last update.
Steps:
1. Launch JForex.
2. Select any strategy from down-list on Historical Tester tab.
3. Click Play button.

Play button changes to "Stop", it shows Filling.., etc, then "Running" and Stop button changes back to "Play".
Java console log:

Java Web Start 1.6.0_34
Using JRE version 1.6.0_34-b04 Java HotSpot(TM) 64-Bit Server VM
User home directory = C:\Users\ZeroIce
----------------------------------------------------
c:   clear console window
f:   finalize objects on finalization queue
g:   garbage collect
h:   display this help message
m:   print memory usage
o:   trigger logging
p:   reload proxy configuration
q:   hide console
r:   reload policy configuration
s:   dump system and deployment properties
t:   dump thread list
v:   dump thread stack
0-5: set trace level to <n>
----------------------------------------------------
Could not launch from cache. Will try online mode. [Some of required resources are not cached.]
23.12.2012 07:39:14.258     INFO                         util.u ] Starting Resource Preloader Hardlinker.
23.12.2012 07:39:14.307     INFO                         util.u ] Final Hard Refs: size: 63
23.12.2012 07:39:43.466  WARNING                     connect.cm ] White Label Image is not received
23.12.2012 07:39:47.298   SEVERE                      actions.c ] null
java.util.ConcurrentModificationException
   at java.util.HashMap$HashIterator.nextEntry(Unknown Source)
   at java.util.HashMap$KeyIterator.next(Unknown Source)
   at com.dukascopy.dds2.greed.agent.strategy.tester.b.p.a(Unknown Source)
   at com.dukascopy.dds2.greed.agent.strategy.tester.b.p.aK(Unknown Source)
   at com.dukascopy.dds2.greed.agent.strategy.tester.b.p.FV(Unknown Source)
   at com.dukascopy.dds2.greed.agent.strategy.tester.b.DT(Unknown Source)
   at com.dukascopy.dds2.greed.agent.strategy.tester.v.run(Unknown Source)
   at com.dukascopy.dds2.greed.agent.strategy.tester.b.a(Unknown Source)
   at com.dukascopy.dds2.greed.actions.StrategyTesterAction.BE(Unknown Source)
   at com.dukascopy.dds2.greed.actions.StrategyTesterAction.Be(Unknown Source)
   at com.dukascopy.dds2.greed.actions.c.run(Unknown Source)
   at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
   at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
   at java.lang.Thread.run(Unknown Source)

OS: Windows 8 Pro 64Bit
Java: 1.6 Oracle

Ask for any other details if needs please.

We are not able to repeat it. Could you please send us the strategy source or the piece of it causing the problems as well as the following information:
Was the Visual Mode enabled?
What was the period and time range chosen?

I reinstalled java and no more this problem. I used these steps to reproduce:
1. Take empty strategy. Important only this code:

    public void onStart(IContext context) throws JFException {
        this.context = context;
        engine = context.getEngine();
        indicators = context.getIndicators();
        history = context.getHistory();
        console = context.getConsole();
        indicators = context.getIndicators();

        Set subscribedInstruments = new HashSet();
        subscribedInstruments.add(instr1);
        subscribedInstruments.add(instr2);
        context.setSubscribedInstruments(subscribedInstruments);

2. Launch backtest with 2 any instruments (Process all ticks, Visual mode is off).

The problem were happen only when I use more than 1 instrument. Sounds like synchronization failure.

Thanks for reply.