Not launching after download??

[SPRINGBEAN]

i try launching plutonium after downloading it without the game on steam and this window blocks me?

Crash ID: 0c093441ad2144d6930a9f8e93d98ee4
System.UnauthorizedAccessException: Attempted to perform an unauthorized operation.
at Microsoft.Win32.RegistryKey.Win32Error(Int32 errorCode, String str)
at Microsoft.Win32.RegistryKey.SetValue(String name, Object value, RegistryValueKind valueKind)
at Plutonium.Updater.App.ProtocolHandlers.Install(String protocol, String path)
at Plutonium.Updater.App.Windows.UpdateWindow.<UpdateWindow_Loaded>d__6.MoveNext()

[Dss0]

SPRINGBEAN try running it as admin.