[Dovecot] dovecot 2.0 -> 2.1 sieve problem

I had a completely working setup before. I upgraded, now I get:

Error: 7LUaNYqHklG6EAAApwKjnA: sieve: execution of script (null) failed, but implicit keep was successful

sieve = /home/vmail/%Ld/%Ln/.dovecot.sieve sieve_dir = /home/vmail/%Ld/%Ln/sieve (this was ~/sieve)

I am not quite sure what is going on. Is anyone else seeing this? Any idea on what has changed? (I am not readily seeing it in changelogs or mailing lists.)

Thank you, Trever

"A right is not what someone gives you; it's what no one can take from you." -- Ramsey Clark