Version 12.0.4

Recently installed CS6 on same machine and never had issues running 2 PS versions together. I'm not 100% certain that it's dual version PS issue.

No other app s crashing.
Crashes most often on launch and quitting... although occasionally at other times too.

A partial copy/paste of the crash report.

Process: Adobe Photoshop CS5 [1174]
Path: /Applications/Adobe Photoshop CS5/Adobe Photoshop Photoshop CS5
Identifier: com.adobe.Photoshop
Version: 12.0.4 (12.0.4x20110407.r.1265) (12.0.4)
Code Type: X86-64 (Native)
Parent Process: launchd [129]

Date/Time: 2014-03-17 10:53:24.561 -0400
OS Version: Mac OS X 10.6.8 (10K549)
Report Version: 6

Interval Since Last Report: 219680 sec
Crashes Since Last Report: 13
Per-App Interval Since Last Report: 27691 sec
Per-App Crashes Since Last Report: 10
Anonymous UUID: D7846191-C19C-4EDA-8E58-778164CF2799

Exception Codes: KERN_PROTECTION_FAILURE at 0x00007fff5f3ffff8
Crashed Thread: 0 Main Thread Dispatch queue:

Thread 0 Crashed: Main Thread Dispatch queue: