OS 10.6.5 corrupts DVD Studio Pro!!!!!!!! - Why didn't Apple tell us

Question

OS 10.6.5 corrupts DVD Studio Pro. Upgrade to 10.6.5 and you will mess up the drop zones in a number of the templates, in addition to other problems. It's a shame that Apple did not thoroughly test this update in advance. If they did, they would have discovered that it breaks one of their own Pro-Apps.
Contrary to some other postings, Pro Kit 6.0.1 has nothing to do with it. It is 100% an OS 10.6.5 problem. HOWEVER to easily (and relatively quickly) fix the problem, all you have to do is reinstall Snow Leopard and then use the 10.6.4 Combo Updater. That's it . . . problem solved. No reinstallation of FCS necessary, no loss of settings or preferences, the computer and all your other Apps and prefs are not disturbed. Moral of the story: Stay clear of OS 10.6.5.

Answer 1

For those who were totally stuck with a malfunctioning DVDSP 4.22 (an in my case running also OS X 10.6.5 and FCP 7.03, on a MAC Pro), I'd like to share my experience since I had a project due and was not going to be able to deliver. Quite an empty and frustrating feeling to say the least. Here's what I did to meet my contract obligations:
1) Do not place your mouse over the simulator screen. Doing so crashed DVDSP every time. Instead you can use the screen remote to do some testing of your chapter markers and stories. You can also use your keyboard arrows. (My mouse is a Magic Mouse FYI).
2. To avoid a compiling error and further test your markers, end jumps, etc., here's what I did:
2a. First I built the project (use only the "build" function). Afterwards, You are going to use only the "format" function. At this point, select as your output destination, the "hard drive" option by using the arrows, next to "output device." After doing this, I was able to open my project with the computer's DVD player and test out my chapter markers and story.
2b. Secondly I of course wanted to burn discs. I burned my disc using Disk Utility. You select the project having the "img" suffix. In short time I burnt 12 copies with no compiler error or other problems.
Well, I made my deadline. I'm glad I did NOT try to go back to a previous Pro Kit as that was beyond my abilities and as Mr. Sass has pointed out, the problem in his opinion is OS 10.6.5 and not Pro Kit 6.01. And before I tackle the possibility of reinstalling Snow Leopard, I will need an idiot's guide as how to do that and be certain that's really the remedy. I'm just an aging liberal arts guy.
I like Apple very much, but this DVDSP problem whatever its origin, forces me to follow the adage, "If it ain't broke, don't fix it" and wait until others point out the pitfalls. And for my next project, capture sixty seconds of raw footage and dare to burn a disc. If it works, fine. If not, warn your client.
I'm sure Apple will fix the problem right after Christmas.