Is Photoshop Elements 6 compatible with 64-bit Windows 7?

Question

I have been unable to open PSE 6 in Windows 7. It worked on my old computer which used XP Home SP3.

Answer 1

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and as an administrator
When you try that, make sure you right-click the program icon or Start menu item and select Run As Administrator.  Running a program in an account that is a member of Administrators is not the same thing (as it was on XP).
If that doesn't work, you could be encountering one of the many reasons why PSE might crash or freeze, most of which are independent of the version of Windows. Unfortunately, these can be hard to diagnose quickly, and the best approach is to work methodically through all the known troubleshooting steps:
Organizer: http://www.johnrellis.com/psedbtool/photoshop-elements-faq.htm#_Troubleshooting_Organizer_ crashes
Editor: http://www.johnrellis.com/psedbtool/photoshop-elements-faq.htm#_Troubleshooting_Editor_cra shes
I suggest starting with the "Fix the licensing" step, whose symptoms can be similar to what you're seeing.