Activiti Modeler doesn't work if not installed by demo setup

Steps:

• Download: activiti-5.0.alpha4.zip and unzip to "D:\Protected\Process\Activiti"

• Cd "D:\Protected\Process\Activiti\setup"

• ant demo.setup

• after Tomcat is started: "http://localhost:8080/activiti-modeler/p/explorer <http://localhost:8080/activiti-modeler/p/explorer> " in Firefox 3.6.6

• 404 Error occurs

• Catalina-Log

INFO: Server startup in 13086 ms
02.08.2010 18:14:38 org.apache.catalina.startup.HostConfig deployWAR
INFO: Deploying web application archive activiti-modeler.war
02.08.2010 18:14:56 org.apache.catalina.core.StandardContext start
SCHWERWIEGEND: Error listenerStart
02.08.2010 18:14:56 org.apache.catalina.core.StandardContext start
SCHWERWIEGEND: Context [/activiti-modeler] startup failed due to previous errors

The error message is

02.08.2010 18:14:38 org.apache.catalina.startup.HostConfig deployWAR
INFO: Deploying web application archive activiti-modeler.war
java.lang.IllegalStateException: No match found
at java.util.regex.Matcher.group(Matcher.java:468)
at java.util.regex.Matcher.group(Matcher.java:428)
at com.signavio.platform.core.impl.FsPlatformPropertiesImpl.<init>(FsPla
tformPropertiesImpl.java:87)
at com.signavio.platform.core.impl.FsPlatformInstanceImpl.bootInstance(F
sPlatformInstanceImpl.java:61)
at com.signavio.platform.core.Platform.bootInstance(Platform.java:77)
at com.signavio.platform.listeners.EntryPoint.contextInitialized(EntryPo
int.java:61)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContex
t.java:3972)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4
467)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase
.java:791)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:77
1)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:546)

at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:905)

at org.apache.catalina.startup.HostConfig.deployWARs(HostConfig.java:740
)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:500
)
at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1345)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java
:303)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(Lifecycl
eSupport.java:119)
at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBas
e.java:1337)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.p
rocessChildren(ContainerBase.java:1601)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.p
rocessChildren(ContainerBase.java:1610)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.r
un(ContainerBase.java:1590)
at java.lang.Thread.run(Thread.java:619)
2010-08-02 18:14:56,656 FATAL (LoggedRuntimeException.java:39) - Platform boot f
ailed!
com.signavio.platform.exceptions.InitializationException: Platform boot failed!
at com.signavio.platform.core.Platform.bootInstance(Platform.java:81)
at com.signavio.platform.listeners.EntryPoint.contextInitialized(EntryPo
int.java:61)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContex
t.java:3972)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4
467)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase
.java:791)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:77
1)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:546)

at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:905)

at org.apache.catalina.startup.HostConfig.deployWARs(HostConfig.java:740
)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:500
)
at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1345)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java
:303)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(Lifecycl
eSupport.java:119)
at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBas
e.java:1337)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.p
rocessChildren(ContainerBase.java:1601)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.p
rocessChildren(ContainerBase.java:1610)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.r
un(ContainerBase.java:1590)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.IllegalStateException: No match found
at java.util.regex.Matcher.group(Matcher.java:468)
at java.util.regex.Matcher.group(Matcher.java:428)
at com.signavio.platform.core.impl.FsPlatformPropertiesImpl.<init>(FsPla
tformPropertiesImpl.java:87)
at com.signavio.platform.core.impl.FsPlatformInstanceImpl.bootInstance(F
sPlatformInstanceImpl.java:61)
at com.signavio.platform.core.Platform.bootInstance(Platform.java:77)
... 17 more
02.08.2010 18:14:56 org.apache.catalina.core.StandardContext start
SCHWERWIEGEND: Error listenerStart
02.08.2010 18:14:56 org.apache.catalina.core.StandardContext start
SCHWERWIEGEND: Context [/activiti-modeler] startup failed due to previous errors