1. I had to change sieverules.php line 683 to $rcmail->decrypt($_SESSION['password']).
Yep, the function changed a couple of days ago, it will be updated in the next version of the plugin.
2. It would be great to be able to customize the Filter drop-down, "Sender" doesn't work for me, I have to use "Envelope From".. (What's the difference between these anyway?)
3. I still can't use the "Mark message as" function (debug från pysieved):
=== S: 'NO "Info: line 80: flag \'\\\\flagged\': not a system flag"\r\n'
In the new version I have moved the arrays which define those headers and the flags and also the operators to the top of the sieverules.php file so you can change them if you need to.
Pixel: I think there was a problem with start up in the case when you have no existing file, no default file, and no files to import. This will be fixed in the new version. I use Dovecot version 1.0.15, did your rules show up before you upgraded dovecot, do you still have your rule file etc or are you starting over?
New version should be done this weekend sometime I hope.