[Dovecot] b8 fails with ACL plugin on

After upgrading to b8 using the ATrpm with the ACL plugin on it fails:

# /etc/init.d/dovecot start Starting Dovecot Imap: Edlopen(/usr/lib/dovecot/imap/lib01_acl_plugin.so) failed: /usr/lib/dovecot/imap/lib01_acl_plugin.so: cannot open shared object file: No such file or directory Error: imap dump-capability process returned 22784 [FAILED]

Anyone able to help be troubleshoot this?

Gavin