Internal server error when redirecting in the first request

[GoogleCodeExporter]

What steps will reproduce the problem?
1. override #incomingRequest: aRequest
2. intercept the very first request
3. redirect it to some arbitrary url

What is the expected output? 
the destination page

What do you see instead?
the internal error

What version of the product are you using? 
2.8a1-lr.541
On what operating system?

Please provide any additional information below.
I've patched it with:

WASession>>redirectTo: anUrl

    ^ self returnResponse: (self redirectResponseFor: anUrl)

WASession>> returnResponse: aResponse
    "aborts all further processing and directly returns aResponse
    aResponse instance of WAResponse"
    ^ escapeContinuation notNil
        ifTrue:[escapeContinuation value: aResponse]
        ifFalse: [aResponse]

Original issue reported on code.google.com by ssas...@seaswork.com.ar on 18 Apr 2008 at 12:42