I have Ulead Photo Express 6, Ref #78750415 ... - JustAnswer
The installer may exit prematurely after you enter the code because it was designed for Windows XP or Vista.
If you own a legitimate copy of the software, you can usually find the activation code (also known as a serial number) in the following places:
Corel has integrated many Ulead features into PaintShop Pro , which is the official modern successor. Best for modern hardware.
Modern free tools like GIMP or Canva offer more features than the original Photo Express. Best for new users.
Most retail versions of Ulead Photo Express 6.0 printed the unique serial key on a sticker attached to the back of the CD jewel case or on the front cover of the user manual.