I have Windows 7 64bit and installed the Photoshop CS4 Exteneded version (both 32 and 64bit) and I can't get the 64 bit to work, and the 32 bit version works great!
I cnat' seem to open any images with photoshop without haveing to start Photoshop first and then open the image. When I right click on an image and select Open with Photoshop CS4, nothing happens.
I tried uninstalling Photoshop CS4 Exteneded and just install the 32bit version but there seems to be no way. I guess I can try installing just Photopshop CS4 and see if that helps.