Problems Installing Adobe CS4

When I try to install the Adobe CS4 Trial it give me the error that my OS isn't compatible. IT must be XP SP3 or Vista SP1. So I've run Windows Updated multiple times and I have no updates I can install.

Anyone have any ideas? Thanks!

Try going to the MS site and see if they find problems. Report back either way.

http://www.microsoft.com/windows/compatibility/en-us/default.aspx

Hello graynightblue,
This could be caused by the Windows Installer, follow these instructions by The CAT.

1. Go to a Windows Vista (Any Version) computer that has the Windows
Installer service running correctly and run regedit(Start-Run-Regedit)
2. Go to the location
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\msiserver
3. Right click on this key and select "Export" and save the key to a Flash
Drive or other.
4. Run sfc /scannow on the damaged Vista computer - you won't need the
install disk as it goes to backup files on your HD. Do not reboot when
complete
5. Double click saved .reg file from working machine and import registry
settings into damaged Vista computer.
6. Now reboot and try to install/uninstall

Also, please make sure that there are no remnants of a previous install/un-install, i would run a search for any Adobe software and check it.

Just as a precaution, i would run this system file check.

http://www.vistax64.com/tutorials/66978-system-files-sfc-command.html

Hope some of this helps, good luck and post your results.