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#61
With any program that has it's roots so far back in Windows history there is going to be a point where they no longer work with current systems. I cannot be sure but there may be some 16 bit code embedded in your application or one off it's dll modules.
unfortunately there is no support for 16bit code in any 64 bit OS including but not exclusively Windows, which are the standard these days - you may be able to get it running for within a 32 bit version of windows which is still available for both windows 7 & Windows 10.
The photos app and paint apps in Windows 7 and especially 10 are both reasonable basic options but something like Irfanview should cover all your file type needs and more ( go for the 32Bit if you want to use the basic image editor, the 64 bit has less editing options but will handle huge files with ease).
Also if you have a modern advanced camera then adobe bridge their front line image manage is available free of charge and that will support even the camera raw files and give access to camera raw for image processing ... It’s True: Adobe Bridge CC Is Completely Free for Everyone, for Life! | ProDesignTools
Hope this helps :)