[Seaside] Installing Magritte 2.0 on Seaside 3.0.7

[intrader]

I have followed the recommended script
http://github.com/renggli/builder/blob/master/scripts/magritte2.st. to install
Magritte 2.0. However, Gofer fails with "Cannot connect to 77.57.195.51. 

An alternative
"Gofer new
squeaksource: 'MetacelloRepository';
package: 'ConfigurationOfMagritte2';
load.

((Smalltalk at: #ConfigurationOfMagritte2 ) project latestVersion) load"

fails with 

"Could not resolve Magritte-Model [Magritte-Model-ir.404}"

Please provide me wiht a working stript.

Thanks