Habdroid won't load OH2 sitemap

I’m attempting to migrate from OH1 to OH2 and (almost - some broken images etc) everything works fine in a web browser, but in Habmin the “default” sitemap never loads, I just see a constant spinning loading circle in the title bar and lots of network activity on the android phone. The OH2 “_default” sitemap works fine. The “default” sitemap also works fine under OH1

How do I go about diagnosing this (OH server is headless so no wireshark etc)? Is there any change I need to make in Habdroid (e.g. url) to make it work with OH2?

Found error

2015-12-09 12:25:29 [DEBUG] [i.r.s.internal.SitemapResource:143 ] - Received HTTP GET request at ‘sitemaps/statistics/default’
2015-12-09 12:25:29 [DEBUG] [s.u.i.items.ItemUIRegistryImpl:772 ] - matchStateToValue: Decimal format exception: java.lang.NumberFormatException: For input string: “Uninitialized”

2015-12-09 12:25:30 [WARN ] [lipse.jetty.server.HttpChannel:395 ] - /rest/sitemaps/statistics/defaultjavax.servlet.ServletException: javax.servlet.ServletException: java.util.IllegalFormatConversionException: d != java.lang.String
at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:130)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
at org.eclipse.jetty.server.Server.handle(Server.java:499)
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:310)
at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:257)
at org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:540)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635)
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555)
at java.lang.Thread.run(Thread.java:745)
Caused by: javax.servlet.ServletException: java.util.IllegalFormatConversionException: d != java.lang.String
at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:423)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:386)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:334)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:221)
at com.eclipsesource.jaxrs.publisher.internal.ServletContainerBridge.service(ServletContainerBridge.java:76)
at org.eclipse.equinox.http.servlet.internal.ServletRegistration.service(ServletRegistration.java:61)
at org.eclipse.equinox.http.servlet.internal.ProxyServlet.processAlias(ProxyServlet.java:128)
at org.eclipse.equinox.http.servlet.internal.ProxyServlet.service(ProxyServlet.java:68)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:808)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:587)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:221)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1127)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1061)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:215)
at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:110)
… 8 common frames omitted
Caused by: java.util.IllegalFormatConversionException: d != java.lang.String
at java.util.Formatter$FormatSpecifier.failConversion(Formatter.java:4302)
at java.util.Formatter$FormatSpecifier.printInteger(Formatter.java:2793)
at java.util.Formatter$FormatSpecifier.print(Formatter.java:2747)
at java.util.Formatter.format(Formatter.java:2520)
at java.util.Formatter.format(Formatter.java:2455)
at java.lang.String.format(String.java:2940)
at org.eclipse.smarthome.core.transform.TransformationHelper.transform(TransformationHelper.java:80)
at org.eclipse.smarthome.io.rest.core.item.EnrichedItemDTOMapper.considerTransformation(EnrichedItemDTOMapper.java:95)
at org.eclipse.smarthome.io.rest.core.item.EnrichedItemDTOMapper.map(EnrichedItemDTOMapper.java:47)
at org.eclipse.smarthome.io.rest.core.item.EnrichedItemDTOMapper.map(EnrichedItemDTOMapper.java:42)
at org.eclipse.smarthome.io.rest.sitemap.internal.SitemapResource.createWidgetBean(SitemapResource.java:280)
at org.eclipse.smarthome.io.rest.sitemap.internal.SitemapResource.createWidgetBean(SitemapResource.java:299)
at org.eclipse.smarthome.io.rest.sitemap.internal.SitemapResource.createPageBean(SitemapResource.java:259)
at org.eclipse.smarthome.io.rest.sitemap.internal.SitemapResource.getPageBean(SitemapResource.java:159)
at org.eclipse.smarthome.io.rest.sitemap.internal.SitemapResource.getPageData(SitemapResource.java:151)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory$1.invoke(ResourceMethodInvocationHandlerFactory.java:81)
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher$1.run(AbstractJavaResourceMethodDispatcher.java:144)
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.invoke(AbstractJavaResourceMethodDispatcher.java:161)
at org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$ResponseOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:160)
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:99)
at org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:389)
at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:347)
at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:102)
at org.glassfish.jersey.server.ServerRuntime$2.run(ServerRuntime.java:308)
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:271)
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:267)
at org.glassfish.jersey.internal.Errors.process(Errors.java:315)
at org.glassfish.jersey.internal.Errors.process(Errors.java:297)
at org.glassfish.jersey.internal.Errors.process(Errors.java:267)
at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:317)
at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:291)
at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:1140)
at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:403)
… 26 common frames omitted

sitemap:

sitemap default label=“Main Menu”
{
Frame {
Group item=gFF label=“First Floor” icon=“firstfloor”
Group item=gGF label=“Ground Floor” icon=“groundfloor”
Group item=Outdoor icon=“garden”
}
Frame label=“Statistics” {
Text item=Auto_Away labelcolor=[Auto_Away_LastUpdate==“Uninitialized”=“lightgray”,Auto_Away_LastUpdate>90=“lightgray”,>25=“orange”,>15=“green”,>5=“orange”,<=5=“blue”]
Text item=MainPC_Alive
Text item=RichPhone_Alive
Text item=Television_Alive
Text item=UnknownDevices
Text item=NoOfPairedDevices

  Text item=Battery_Sensor_Hall labelcolor=[Battery_Sensor_Hall_LastUpdate=="Uninitialized"="lightgray",Battery_Sensor_Hall_LastUpdate>90="lightgray",>25="orange",>15="green",>5="orange",<=5="blue"] 
    Text item=Battery_FrontDoor labelcolor=[Battery_FrontDoor_LastUpdate=="Uninitialized"="lightgray",Battery_FrontDoor_LastUpdate>90="lightgray",>25="orange",>15="green",>5="orange",<=5="blue"] 
    Text item=Battery_BackDoor labelcolor=[Battery_BackDoor_LastUpdate=="Uninitialized"="lightgray",Battery_BackDoor_LastUpdate>90="lightgray",>25="orange",>15="green",>5="orange",<=5="blue"] 
    Text item=Battery_Sensor_Thermostat labelcolor=[Battery_Sensor_Thermostat_LastUpdate=="Uninitialized"="lightgray",Battery_Sensor_Thermostat_LastUpdate>90="lightgray",>25="orange",>15="green",>5="orange",<=5="blue"] 
    Text item=Boiler_Thermo labelcolor=[Boiler_Thermo_LastUpdate=="Uninitialized"="lightgray",Boiler_Thermo_LastUpdate>90="lightgray",>25="orange",>15="green",>5="orange",<=5="blue"] 
    Text item=HeatCall_Thermostat labelcolor=[HeatCall_Thermostat_LastUpdate=="Uninitialized"="lightgray",HeatCall_Thermostat_LastUpdate>90="lightgray",>25="orange",>15="green",>5="orange",<=5="blue"] 

}
}

It seems OH2 no longer likes treating the string “Uninitialized” as a number, which is understandable I guess.
What would be the equivalent functionality under OH2?