Supported browser versions with 1812?

Another WebTest user suggested we try using FF3.6 as our browser setting to
get around some Dojo issues. When I try to change my browser config to ANY
version of FF, I get an error, eg:

java.lang.IllegalArgumentException: Illegal browser version: >FF3.6

Here's my config, do you see anything wrong with that? I also tried FF5 and
later (up to FF10) in case maybe 3.6 isn't supported anymore. I found an
issue filed in February by someone getting the same error using IE8 with
build 1812, but there was no response to it.

<config
    host="${hostname}"
    browser="FF3.6"
    protocol="http"
    port="${port}"
    basepath="/"
    resultpath="${resultsPath}"
    resultfile="result.xml"
    summary="true"
    showhtmlparseroutput="false"
    saveresponse="true"
    haltonerror="false"
    haltonfailure="false"
    easyajax="true" >
    <option name="ThrowExceptionOnScriptError" value="true"/>
</config>

-- 
Lisa Crispin
Co-author with Janet Gregory, _Agile Testing: A Practical Guide for Testers
and Agile Teams_ (Addison-Wesley 2009)
Contributor to _Beautiful Testing_ (O'Reilly 2009)
http://lisacrispin.com
@lisacrispin on Twitter
http://entaggle.com/lisacrispin