I had to finish the update manually as old pslaunch did not take care of new pslaunchmacosx.zip download. No problem for me, but It appears that it was supposed to unzip and finish the process, based on the errors in the system logfile. There were also a number of warnings and errors that may be related to my OS configuration. Let me know if you need anything further. Relevant lines from system log are posted below. Thank you!
10.5.8 / Intel Core 2 Duo
http://pastebin.com/YVcNKcYA[you can kill this if you want, I put it on the tracker thanks]
