Hi Oscar Wahlen,
Unfortunately the documentation is not up-to-date. To Build our controls you should start the Build_SL script that is located in the Build root folder of the source.
We will make sure that the instructions are up-to-date for our next official release.
the Telerik team
Registration for Q1 2011 What’s New Webinar Week is now open. Mark your calendar for the week starting March 21st and book your seat
for a walk through all the exciting stuff we ship with the new release!