Protocol problem (bug?) with rsync-2.5.6

[Klaus-J. Wolf]

Hi,

let me shortly describe the background of my problem: I was using a Gentoo box 
as a workstation and a NetBSD-1.6 box as a backup machine. Everything ran 
perfectly. Now I switched my workstation OS to FreeBSD-4.8_RELEASE.

Both rsyncs are made from the ports, respectively (with Gentoo, it were the 
Ebuilds, but the same idea...). (FreeBSD port version: 2.5.6_1)

Now, when I try to synchronize the backup, I get a disturbing error message, 
something like (running -n dry-run mode):

[...many lines of text...]
deleting directory work/nvidia/NVIDIA_GLX-1.0-4191
deleting directory work/nvidia
unexpected tag 94
rsync error: error in rsync protocol data stream (code 12) at io.c(315)

or:

[...many lines of text...]
.thumbnails/normal/ee4752ec2125bc1faef8edd4a75d1df5.png
.thumbnails/normal/ee55bb657904968ef3f852db22a17662.png
Invalid file index 117440540 (count=136972)
rsync error: protocol incompatibility (code 2) at sender.c(135)

I have checked the network connection by transferring >11GB (cat xyz |rsh 
amadillo "md5"), and I had no problems. It's simply a cross-over cable 
between the machines, so I don't expect any switch problems, and they're both 
x86-based.

My command line looks like:
rsync -n -e rsh -axv --delete --exclude-from $TMPF --delete-excluded 
--progress ~kjwolf/ amadillo:/pile/myhome

I would have supected the FreeBSD port patches, but a quick and not very 
professional look on them didn't reveal any obvious fault...

Can you help?

Kind regards,
k.j.

ps. rsync is the best invention after Unix!!!