Photoshop CS4 error message

[Andrew_...@adobeforums.com]

I have tried to get Photoshop CS4 to run but keep getting Photoshop has stopped working. In 64bit the error message is

Problem Event Name: BEX64
Application Name: Photoshop.exe
Application Version: 11.0.0.0
Application Timestamp: 48d38aa7
Fault Module Name: StackHash_a1a9
Fault Module Version: 0.0.0.0
Fault Module Timestamp: 00000000
Exception Offset: 0000000000000000
Exception Code: c0000005
Exception Data: 0000000000000008
OS Version: 6.0.6001.2.1.0.256.1
Locale ID: 2057
Additional Information 1: a1a9
Additional Information 2: 97adcf723889235ddc4cb6cacaa74283
Additional Information 3: 8a4c
Additional Information 4: 9cfa5bc339a5d29061908def628328bc

in 32bit the error message is

Problem Event Name: APPCRASH
Application Name: Photoshop.exe
Application Version: 11.0.0.0
Application Timestamp: 48d3882e
Fault Module Name: StackHash_fd00
Fault Module Version: 0.0.0.0
Fault Module Timestamp: 00000000
Exception Code: c0000005
Exception Offset: 00000000
OS Version: 6.0.6001.2.1.0.256.1
Locale ID: 2057
Additional Information 1: fd00
Additional Information 2: ea6f5fe8924aaa756324d57f87834160
Additional Information 3: fd00
Additional Information 4: ea6f5fe8924aaa756324d57f87834160

I have uninstalled/reinstalled Photoshop and deleted the preference files to no avail. I have also used Adobe CS4 Clean Script along with Microsoft Windows Installer CleanUp Utility to no avail.

I have installed Photoshop CS3 which seems to work except when I try to access the preference files when it crashes.
My system spec is
OS Vista Ultimate x64 SP1
CPU Intel Core 2 Quad Q660 2.40GHz
Motherboard Asus P5QL-E
Memory 8 Gbt
Graphics Card Asus EAH 4850

Can anyone help.

Thanks

[Chri...@adobeforums.com]

First, install the 11.0.1 update.

Then, if it still crashes, tell us WHEN it crashes.

[Andrew_...@adobeforums.com]

I have installed 11.0.1 update along with the latest ATI 4850 drivers.I can now start Photoshop and I recieve the message that Photoshop has encountered a problem with the display driver and has temporarily disabled GPU enhancements.I close the box and try to open a photograph when Photoshop crashes with the above error message.I have also tried PSCS4GPU_OptionalPlugins to no avail. I have also checked the ATI Radeon HD 4800 properties and in the General tab it reads This device is working properly.
Windows did not start a related device driver. To learn more, click the Driver tab and then click Driver Details.I opened the Drivers Details and found that one of the entries was not ticked. C:\Windows\system32\drivers\ATKDispLowFilter.sys.Hope this helps.

[Chri...@adobeforums.com]

OK, that message means what it says -- the driver has a problem and Photoshop is having to shut it down. Please report that to ATI.

If Photoshop crashes when creating or opening a document, then the crash cause could be in the printer driver (which gets partly initialized when we create or open a document).