We found a new way to create these, thanks to https://github.com/jjpersch Now we create these with a patched version of his ectou-export so things go a bit smoother then with the original. Boxes are now based on the HVM GP2 AMD64 AMI's in eu-central-1 version. This is the first release using this method, it works for us ;-) Virtualbox Guest additions are installed.