Photoshop CS6 upgrade won't let me sign in. When it's getting ready to download, after I put in my seriel number it asks me to sign in however when I push the button I get a window that says "Adobe Application Manager has stopped working - A problem caused the program to stop working correctly. Windows will close the program and notify you if a solution is available." and makes me close the program.
Try to contact Adobe Support either by chat or via phone when you have serial number and activation issues.
Here are some links to help make contact: