throw an exception if the project url does not match the current working version url.
throw an exception if the project url does not match the current working version url.

git-svn-id: 218d9835f48105c2b211e16e763afd6f0acdb2e8@16092 0f35748b-8228-47f0-bbea-889afbbd9a42

zicht/z,zicht/z