Suddenly instead of infanview Windows 7 is using paint to open images. When I right click I see 'Edit' But no 'Open'. Under Open With infanview is the first option. I tried running infanview as an admin to set the file association and had no luck. How do I fix this?
You should be able to right click on the file in explorer and choose open with -- choose default program:
Then choose your default program in the next menu and check always use the selected program to open this kind of file.