imapsync fails

[martijn@…]

The command issued is:

cat syncgmailinbox.sh

#!/bin/bash

/opt/local/bin/imapsync --syncinternaldates \ --host1 blahblah.com \ --user1 xxxx \ --password1 xxx \ --host2 imap.gmail.com --port2 993 --ssl2 \ --user2 blahblah@… \ --password2 xxx \ --folder 'INBOX' \ --regextrans2 's/INBOX/INBOX/'

TimeZone :[CEST]
Will try to use CRAM-MD5 authentication on host1
Will try to use CRAM-MD5 authentication on host2
From imap server [blahblah.com] port [143] user [xxx]
To   imap server [imap.gmail.com] port [993] user [blahblah@gmail.com]
Banner : * OK [CAPABILITY IMAP4 IMAP4rev1 LITERAL+ ID STARTTLS AUTH=PLAIN AUTH=LOGIN AUTH=CRAM-MD5] blahblah.com Cyrus IMAP4 v2.3.8-OS X Server 10.5:	9C31 server ready
Host blahblah.com says it has CAPABILITY for AUTHENTICATE CRAM-MD5
Internal CRAM-MD5 implementation not available: Can't locate Digest/HMAC_MD5.pm in @INC (@INC contains: /opt/local/lib/perl5/site_perl/5.8.9/darwin-2level /opt/local/lib/perl5/site_perl/5.8.9 /opt/local/lib/perl5/site_perl /opt/local/lib/perl5/vendor_perl/5.8.9/darwin-2level /opt/local/lib/perl5/vendor_perl/5.8.9 /opt/local/lib/perl5/vendor_perl /opt/local/lib/perl5/5.8.9/darwin-2level /opt/local/lib/perl5/5.8.9 .) at /opt/local/lib/perl5/vendor_perl/5.8.9/Mail/IMAPClient.pm line 124.
 at /opt/local/bin/imapsync line 2527
	main::__ANON__('Mail::IMAPClient=HASH(0x8a0218)', 'CRAM-MD5', undef) called at /opt/local/bin/imapsync line 2310
	main::__ANON__('Mail::IMAPClient=HASH(0x8a0218)') called at /opt/local/bin/imapsync line 791
	main::login_imap('blahblah.com', 143, 'xxx', 'xxx', undef, undef, 0, undef, 'CRAM-MD5', ...) called at /opt/local/bin/imapsync line 731
Use of uninitialized value in subroutine entry at /opt/local/bin/imapsync line 2534.
Can't use string ("") as a subroutine ref while "strict refs" in use at /opt/local/bin/imapsync line 2534.