Is there something special to consider when starting Shark in Snow Leopard?

After upgrade to Snow Leopard and downloading the new Xcode along with all new developer tools, Shark does not start. I launch it but it 开发者_Go百科never appears. Is this a known issue? Is there a solution to get it running?

Have you looked in system.log in Console.app? Could be a clue there. Also check for crash reports in ~/Library/Logs/CrashReporter.