1) The assemble server page is not formatting properly in 2.2.1-SNAPSHOT. Go to assemble server page, click "expert user" and try to scroll down. Unless I make the font type very small, I can't see the system plugins and can't scroll down to them.
2) Also, the default value for "assembly target path" used to default to var/temp. It doesn't default to anything
3) This is a potentially very bad problem (and be very careful testing or you will lose files). The assembly process seems to be trying to clean up after itself – which is nice. However, if you specify an existing directory, it will wipe out all of the files in your directory. I specified the root directory of my server and it deleted the entire server. Very bad and could have been worse!. We should be generating a temporary directory and only deleting this temporary directory, only.