CARP not working [Communications error & older version]

nijntje

I've been attempting to get CARP to work on and off for about a week now using the tutorial available here, but I'm not getting past this problem.

Initial setup:

Installed with 08-01-2011 snapshot. Updated to most recent (Mar 13)
Reset to factory defaults

2 systems. 
3 NIC's per system: LAN, WAN, CARP
WAN: 130.x.x.x 
LAN: 10.0.0.2 & 10.0.0.3 (static)
CARP: 192.168.1.1 & 192.168.1.2 (static)

Firewall rule on both systems: (only firewall rule on CARP interface). 
Action: Pass
Interface: CARP
Protocoll: any
Source: any
Destination: any

No virtual IP's defined

Next, I try to set up the CARP syncing on the main system:


CARP settings master: 
Synchronize states: Enabled
Sync interface: CARP
pfsync Synchronixe Peer IP: 192.168.1.2
Synchronize Config to IP: 192.168.1.2
Password: <set>Synchronize virtual IPs: Enabled</set>

And on the slave:


CARP settings slave:
Synchronize states: Enabled
Sync interface: CARP
pfsync Synchronixe Peer IP: 192.168.1.1
Synchronize Config to IP: <empty>Password: <empty>Synchronize virtual IPs: Enabled</empty></empty>

After these steps, the following appears in my log (after about a minute)


A communications error occured while attempting XMLRPC sync with username admin https://192.168.1.2:443\. 
New alert found: A communications error occured while attempting XMLRPC sync with username admin https://192.168.1.2:443\. 
A communications error occured while attempting XMLRPC sync with username admin https://192.168.1.2:443\. 
New alert found: A communications error occured while attempting XMLRPC sync with username admin https://192.168.1.2:443\. 
The other member is on older configuration version of pfSense. Sync will not be done to prevent problems!

Adding a virtual IP is no use, it does not get replicated. Also tried it with WOL, enabled syncing and added a WOL entry. Does not get replicated either.

Both systems are using https for the web interface
The firewall on the slave system is showing communication

PASS CARP   192.168.1.1:54569    192.168.1.2:443  TCP:S

Both systems have configuration version 7.7

Unfortunately, I cannot find any more debugging information. So my question is, does anyone know how to solve this and if not, how can I debug this?

Thank you!

jimp

Is your GUI actually running on port 443?

Can you telnet to 192.168.1.2:443 from the master?