GWT Development Plugin does not start

Please help me to resolve my issue. I try to run my GWT app in Chrome whith GWT DevMode. The version of GWT is pretty old (2.1.1). I run GWT DevMode from Intellij Idea as Ant target that way:

<target name="devmode" depends="gwtc" description="Run development mode">
    <java failonerror="true" fork="true" classname="com.google.gwt.dev.DevMode">
        <classpath>
            <pathelement location="src"/>
            <path refid="project.class.path"/>
        </classpath>
        <jvmarg value="-Xmx512M" />
        <arg value="-startupUrl"/>
        <arg value="index.jsp"/>
        <!-- Additional arguments like -style PRETTY or -logLevel DEBUG -->
        <arg value="-logLevel" />
        <arg value="DEBUG" />
        <arg value="com.emotion.erp.Core" />
    </java>
</target>

it runs normal GWT DevMode window (as expected) and generates me a startup url

http://ift.tt/1KIENPw

BUT when a open it in the Chrome application starts NOT in debug mode!

And the red gwt toolbox in upper right corner not appear at all, and the third tab in GWT DevMode window doesn't appear too!

Chrome version 40.0.2214.111, GWT Developer Plugin version installed in the Chrome 1.0.11357.

How can i run my app in normal GWT DevMode? Thank you for your help...