The new url of the svn multiboost repository is from now on :

​https://svn.lal.in2p3.fr/AppStat/Multiboost

It's browsable there : https://trac.lal.in2p3.fr/AppStat/browser

Please rename your old Multiboost directory and do a complete checkout with the new repository. If by chance you still have some modified and uncommited changes, go in your old Multiboost directory, do a

svn info

It will give you a list of modified file, you'll have to manually copy them in your new Multiboost directory and commit the changes.