play.exceptions.CompilationException: The method decodeBase64(byte[]) in the type Base64 is not applicable for the arguments (String)

[sleepless]

Hi,
I'm using Play 1.2.3 with the GWT2 module (version 1.8).  I had to use the apache commons library for Base64 encode/decode operations.  The Base64 class is also available in GWT, so I changed the .classpath to order  apache-commons before GWT.  This works fine in eclipse.  However, when I run the project, I get an exception like this -

Compilation error (In /app/jobs/AppInfoQueryJob.java around line 101)
The file /app/jobs/AppInfoQueryJob.java could not be compiled. Error raised is : The method decodeBase64(byte[]) in the type Base64 is not applicable for the arguments (String)

play.exceptions.CompilationException: The method decodeBase64(byte[]) in the type Base64 is not applicable for the arguments (String)
    at play.classloading.ApplicationCompiler$2.acceptResult(ApplicationCompiler.java:246)
    at org.eclipse.jdt.internal.compiler.Compiler.handleInternalException(Compiler.java:656)
    at org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:496)
    at play.classloading.ApplicationCompiler.compile(ApplicationCompiler.java:278)
    at play.classloading.ApplicationClassloader.getAllClasses(ApplicationClassloader.java:412)
    at play.Play.start(Play.java:485)
    at play.Play.detectChanges(Play.java:599)
    at play.Invoker$Invocation.init(Invoker.java:186)
    at Invocation.HTTP Request(Play!)

I suspect the classpath is being used from a different location than the .classpath file that eclipse uses.  Could someone please tell me how to set the classpath for use in "play run" or "play start" commands?

Thanks
Sleepless

[Brian Nesbitt]

The classpath gets constructed in the framework\pym\play\application.py in the function "getClasspath()".

The order they get put onto the classpath is:

conf directory

framework/play-version.jar

yourapproot/lib

modules "lib" dirs

framework/lib