Problem linking 2 bots.

In bot1:
.+bot bot2
.chattr bot2 +fo
.botattr bot2 +s
In bot2:
.+bot bot1 ip:port
.chattr bot1 +fo
.botattr bot1 +pgh


bot1 shows:
[13:49] Telnet connection: ip/port
[13:49] Challenging bot2...
[13:49] Linked to bot2.
*** Linked to bot2
[13:49] Creating resync buffer for bot2
[13:49] Sending user file send request to bot2
[13:49] Disconnected from: bot2. No reason (lost 1 bot and 1 user)
*** Disconnected from: bot2. No reason (lost 1 bot and 1 user)
[13:49] (Userlist transmit aborted.)

bot2 shows:
[14:21] Linking to bot1 at ip:port ...
[14:21] Linked to bot1.
*** Linked to bot1
[14:21] Downloading user file from bot1
[14:21] Lost userfile transfer from bot1; aborting.
*** bot1
[14:21] (Userlist download aborted.)

Any ideas?