I received this error message when I tried to launch SK after this most recent patch.

"The application has failed to launch due to a missing resource:
http://download.threerings.net/spiral/20120913102504/digest.txt"

And then it says to visit the wiki to fix it but, clearly, that won't fix it if the file is missing from the update. I'm going to try and validate SK via Steam to see if that fixes it.

Edit: Validation failed to fix the problem.

Edit2: Problem solved, Steam picked up the file finally and the update is now downloading properly. May have occurred upon forcing the validation of files.