II have installed Ubuntu and wanem on a raspberry pi. The wanem runs, but I have no graphical interface because this error message always appears. I dont know how to fix this problem :/ Maybe someone have an idea? Thank you **root@raspberrypi:~# gem install thin Building native extensions. This could take a while... Successfully installed thin-1.8.2 Parsing documentation for thin-1.8.2 Done installing documentation for thin after 1 seconds 1 gem installed root@raspberrypi:~# cd wanem root@raspberrypi:~/wanem#...