I just transferred the files in my home directory from an x86_64 machine to an i686 machine. This included the .dovecot.sieve and .dovecot.sievec files in my home root, and the Dovecot index files in my ~/Maildir directory. Everything seemed to be working until I tried sending an email that triggers a Sieve "redirect" command, then I got the following in the logs. I then tried the same dovecot.sieve file using a separate account which has always been on the i686 machine (and the index files have always been written there too), and the Sieve "redirect" worked fine. There were core files written in my home directory which I can post if necessary.
Both the x86_64 and i686 machines are CentOS 4.5 running Dovecot 1.0.5 and Dovecot Sieve plugin 1.0.1.
Sep 15 21:44:10 myhost deliver(julian): Trying to allocate 0 bytes Sep 15 21:44:10 myhost deliver(julian): Raw backtrace: /usr/libexec/dovecot/deliver(i_syslog_panic_handler+0x24) [0x80a08b4] -> /usr/libexec/dovecot/deliver [0x80a06a9] -> /usr/libexec/dovecot/deliver [0x80a91bd] -> /usr/libexec/dovecot/deliver [0x80574f8] -> /usr/libexec/dovecot/deliver(duplicate_check+0x51) [0x8057671] -> /usr/lib/dovecot/lda/lib90_cmusieve_plugin.so [0x133f1f] -> /usr/lib/dovecot/lda/lib90_cmusieve_plugin.so(sieve_execute_bytecode+0x549) [0x141b59] -> /usr/lib/dovecot/lda/lib90_cmusieve_plugin.so(cmu_sieve_run+0x3fd) [0x134c4d] -> /usr/lib/dovecot/lda/lib90_cmusieve_plugin.so [0x1339f8] -> /usr/libexec/dovecot/deliver(main+0x10c8) [0x8056e28] -> /lib/tls/libc.so.6(__libc_start_main+0xd3) [0x506de3] -> /usr/libexec/dovecot/deliver [0x80550a1] Sep 15 21:44:10 myhost postfix/local[4924]: E1947344AE: to=julian@lava.net, relay=local, delay=0.35, delays=0.17/0.01/0/0.17, dsn=5.3.0, status=bounced (Command died with signal 6: "/usr/libexec/dovecot/deliver")