@Reproman: Hey . Tunngle is 100% safe . It's always checked for virus before releasing. I use it for myself (over years) with Kaspersky IS, never had any trouble. You can also check this wiki for more info: Antivirus#Tunngle
@naughty_girl : To see your Virtual IP, you need to join a network first .
For problem with the internet, check this wiki: www.tunngle.net/wiki/Troubleshooting#Disconnects
And for the last one, check this wiki: Error:4-112