Old enough that it may not work on Win10
An idea that MAY work to install and/or run old programs in Windows 10... works for some, not for others
-RIGHT click the program icon or EXE and select a compatibility mode in the pop up option window
-or Run as Administrator http://forums.adobe.com/thread/969395 to assign FULL Windows permissions may help... says Encore, but sometimes required for ALL Adobe programs (this is NOT the same as using an Administrator account)
Not working for me as well, APE12 was working perfectly fine on Win10 untill I installed newest NVIDIA drivers (375.70, 10/28/2016) today.
As we've said again and again on this forum, nVidia's October drivers are breaking programs left and right, including Premiere Elements.
Some people have been able to get things working by rolling back to driver 368.2.2
& a big sorry for my late response. Uninstalling all related stuff and then downgrading my nvidia driver helped fine.
I am very thankfull for your fast help.