I got a TmkServer assert on my TCD540040 when I was running a kernel with CONFIG_NETFILTER turned off. My workaround was something along the lines of:
Code:
cd /sbin
mv iptables iptables.old
echo -e '#!/bin/bash\nexit 0' > iptables
chmod 755 iptables
Since I see an iptables failure immediately preceding your error, I suspect you could be running into a similar problem. I'm not sure if netfilter is built into the 3.1.5 kernel, but I can confirm that 3.1.5 doesn't ship with the iptables kernel modules.
Edit: fixed " typo