CreateApp fails on Windows when fileType parameter is specified

D:\workspace36>griffon create-app Simple -fileType=java
Welcome to Griffon 0.9.1a - http://griffon.codehaus.org/
Licensed under Apache Standard License 2.0
Griffon home is set to: C:\opt\griffon-0.9.1a

Base Directory: D:\workspace36
Resolving dependencies...
Dependencies resolved in 313ms.
Running script C:\opt\griffon-0.9.1a\scripts\CreateApp_.groovy
Environment set to development
    [mkdir] Created dir: D:\workspace36\Simple java\griffon-app
    [mkdir] Created dir: D:\workspace36\Simple java\griffon-app\conf
    [mkdir] Created dir: D:\workspace36\Simple java\griffon-app\conf\keys
    [mkdir] Created dir: D:\workspace36\Simple java\griffon-app\conf\webstart
    [mkdir] Created dir: D:\workspace36\Simple java\griffon-app\conf\dist
    [mkdir] Created dir: D:\workspace36\Simple java\griffon-app\conf\dist\applet
    [mkdir] Created dir: D:\workspace36\Simple java\griffon-app\conf\dist\jar
    [mkdir] Created dir: D:\workspace36\Simple java\griffon-app\conf\dist\shared
    [mkdir] Created dir: D:\workspace36\Simple java\griffon-app\conf\dist\webstart
    [mkdir] Created dir: D:\workspace36\Simple java\griffon-app\conf\dist\zip
    [mkdir] Created dir: D:\workspace36\Simple java\griffon-app\conf\metainf
    [mkdir] Created dir: D:\workspace36\Simple java\griffon-app\controllers
    [mkdir] Created dir: D:\workspace36\Simple java\griffon-app\i18n
    [mkdir] Created dir: D:\workspace36\Simple java\griffon-app\lifecycle
    [mkdir] Created dir: D:\workspace36\Simple java\griffon-app\models
    [mkdir] Created dir: D:\workspace36\Simple java\griffon-app\resources
    [mkdir] Created dir: D:\workspace36\Simple java\griffon-app\views
    [mkdir] Created dir: D:\workspace36\Simple java\lib
    [mkdir] Created dir: D:\workspace36\Simple java\scripts
    [mkdir] Created dir: D:\workspace36\Simple java\src
    [mkdir] Created dir: D:\workspace36\Simple java\src\main
    [mkdir] Created dir: D:\workspace36\Simple java\test
    [mkdir] Created dir: D:\workspace36\Simple java\test\integration
    [mkdir] Created dir: D:\workspace36\Simple java\test\unit
[propertyfile] Creating new property file: D:\workspace36\Simple java\application.properties
     [copy] Copying 1 resource to D:\workspace36\Simple java
    [unjar] Expanding: D:\workspace36\Simple java\griffon-shared-files.jar into D:\workspace36\Simple java
   [delete] Deleting: D:\workspace36\Simple java\griffon-shared-files.jar
     [copy] Copying 1 resource to D:\workspace36\Simple java
    [unjar] Expanding: D:\workspace36\Simple java\griffon-app-files.jar into D:\workspace36\Simple java
   [delete] Deleting: D:\workspace36\Simple java\griffon-app-files.jar
    [touch] Creating D:\workspace36\Simple java\griffon-app\i18n\messages.properties
Error executing script CreateApp: groovy.lang.MissingMethodException: No signature of method: java.lang.Boolean.startsWith() is applicable for argumen
t types: (java.lang.String) values: [.]
groovy.lang.MissingMethodException: No signature of method: java.lang.Boolean.startsWith() is applicable for argument types: (java.lang.String) values
: [.]
        at gant.Gant$_dispatch_closure5.doCall(Gant.groovy:391)
        at gant.Gant$_dispatch_closure7.doCall(Gant.groovy:415)
        at gant.Gant$_dispatch_closure7.doCall(Gant.groovy)
        at gant.Gant.withBuildListeners(Gant.groovy:427)
        at gant.Gant.this$2$withBuildListeners(Gant.groovy)
        at gant.Gant$this$2$withBuildListeners.callCurrent(Unknown Source)
        at gant.Gant.dispatch(Gant.groovy:415)
        at gant.Gant.this$2$dispatch(Gant.groovy)
        at gant.Gant.invokeMethod(Gant.groovy)
        at gant.Gant.executeTargets(Gant.groovy:590)
        at gant.Gant.executeTargets(Gant.groovy:589)
        at org.codehaus.griffon.cli.GriffonScriptRunner.executeWithGantInstance(GriffonScriptRunner.java:652)
        at org.codehaus.griffon.cli.GriffonScriptRunner.callPluginOrGriffonScript(GriffonScriptRunner.java:512)
        at org.codehaus.griffon.cli.GriffonScriptRunner.executeCommand(GriffonScriptRunner.java:295)
        at org.codehaus.griffon.cli.GriffonScriptRunner.main(GriffonScriptRunner.java:137)
        at org.codehaus.griffon.cli.support.GriffonStarter.rootLoader(GriffonStarter.java:208)
        at org.codehaus.griffon.cli.support.GriffonStarter.main(GriffonStarter.java:234)
Caused by: groovy.lang.MissingMethodException: No signature of method: java.lang.Boolean.startsWith() is applicable for argument types: (java.lang.Str
ing) values: [.]
        at CreateApp_$_run_closure10.doCall(CreateApp_:221)
        at CreateApp_$_run_closure1.doCall(CreateApp_:35)
        at CreateApp_$_run_closure1.call(CreateApp_)
        at CreateApp_$_run_closure2.doCall(CreateApp_:47)
        at application$_run_closure1.doCall(application.groovy:27)
        at CreateApp_$_run_closure1.doCall(CreateApp_:39)
        at gant.Gant$_dispatch_closure5.doCall(Gant.groovy:381)
        ... 16 more
Error executing script CreateApp: groovy.lang.MissingMethodException: No signature of method: java.lang.Boolean.startsWith() is applicable for argumen
t types: (java.lang.String) values: [.]