GraphExplorer widget compile problem

HI All,

I want to use GraphExplorer for my application and I am getting this error durin compile.

Please tell me how to fix it. below is the dependencies in my pom

org.vaadin.addons graph-explorer 0.7.2

<vaadin.version>7.7.3</vaadin.version>


[INFO]
— vaadin-maven-plugin:7.7.3:compile (default) @
[INFO]
auto discovered modules [AppWidgetset]

[INFO]
Using com.vaadin:vaadin-client version 7.7.3
[INFO]
Using com.vaadin:vaadin-client-compiler version 7.7.3
[INFO]
Compiling module AppWidgetset
[INFO]
[ERROR]
Unexpected internal compiler error
[INFO]
java.lang.NoSuchFieldError: warningThreshold
[INFO]
at com.google.gwt.dev.javac.JdtCompiler$1.(JdtCompiler.java:605)
[INFO]
at com.google.gwt.dev.javac.JdtCompiler.getStandardCompilerOptions(JdtCompiler.java:603)
[INFO]
at com.google.gwt.dev.javac.JdtCompiler.getCompilerOptions(JdtCompiler.java:633)
[INFO]
at com.google.gwt.dev.javac.JdtCompiler.doCompile(JdtCompiler.java:983)

thanks
Chahat

After a bit of investigtion, I found that there was a dependency conflict with

tomcat jasper-compiler-jdt 5.5.23

Is it not possible to use both the dependencies?

thanks
Chahat