[PS CS5] Install fails very early on with this error...

Question

Hi all, I am trying to install the CS5 trial but when the install.app runs it goes for a few seconds and then kicks this error up into the console:
Process:         Install [4823]
Path:            /Volumes/Adobe Photoshop CS5/Adobe Photoshop CS5/Install.app/Contents/MacOS/Install
Identifier:      Install
Version:         ??? (???)
Code Type:       X86 (Native)
Parent Process:  Install [4690]
Date/Time:       2010-05-04 10:39:25.982 +0545
OS Version:      Mac OS X 10.6.3 (10D573)
Report Version:  6
Exception Type:  EXC_BREAKPOINT (SIGTRAP)
Exception Codes: 0x0000000000000002, 0x0000000000000000
Crashed Thread:  0
Application Specific Information:
*** multi-threaded process forked ***
*** NSTask: Task create for path '/usr/bin/ditto' failed: 22, "Invalid argument".  Terminating temporary process.
Thread 0 Crashed:
0   com.apple.Foundation              0x92fa1f10 ___NEW_PROCESS_COULD_NOT_BE_EXECD___ + 7
1   com.apple.Foundation              0x92e8f63c -[NSConcreteTask launchWithDictionary:] + 3922
2   com.apple.Foundation              0x92eccc5d +[NSTask launchedTaskWithLaunchPath:arguments:] + 251
3   com.adobe.PDApp.setup             0x0000a08e start + 29970
4   com.apple.Foundation              0x92e3c8dc -[NSThread main] + 45
5   com.apple.Foundation              0x92e3c88c __NSThread__main__ + 1499
6   libSystem.B.dylib                 0x99020a19 _pthread_start + 345
7   libSystem.B.dylib                 0x9902089e thread_start + 34
Thread 0 crashed with X86 Thread State (32-bit):
  eax: 0x00000001  ebx: 0x92e8e6fb  ecx: 0x0105b200  edx: 0x0105b200
  edi: 0x00001300  esi: 0x00126fa0  ebp: 0xb031bb08  esp: 0xb031baf0
   ss: 0x0000001f  efl: 0x00000286  eip: 0x92fa1f10   cs: 0x00000017
   ds: 0x0000001f   es: 0x0000001f   fs: 0x0000001f   gs: 0x00000037
  cr2: 0x576ed000
(I can post the binaries if needed)
BUT I can install on other machines from the download, and on another external hardrive booted up with this same machine (core 2 duo imac).So the install file is good, there is just something about this one imac's internal drive that won't let me install. The permissions are clean, and I even reformatted the drive (GUI part: extended, journeled, case-insensitive). I have tried other/new user with no luck as well. About to give up...can u help?
thx!

Answer 1

Yes, that was a hairy one to troubleshoot! But all is well now and we are putting CS5 into production...nice job adobe! Really like puppet warp and content-aware fill.
btw, does anyone know how to change the Help preference back from "View in Browser" to "Community Help"? I clicked that but like the built-in help system that seems to be new, dunno, but it looked nicer. Cheers,
jigs