I have FlexBuilder 3 running standalone that I use instead of installing eclipse. I use Mylyn with it but instead of Mantis we use Jira and it seems to work fine. As for eclipse version, mine says eclipse is version 3.3.1, but then again I've used the update mechanism to... well... update it.
--- In [email protected], "George" <[EMAIL PROTECTED]> wrote: > > Which version of Eclipse is delivered with Flex Builder Professional, > and has anyone used the capabilities of MyLyn and Mantis with Flex > Builder? >

