When I push the button, I get a different message, as per the screen shot.
I tried every profile on my machine that I (and Qimage) could find, and none of them made a change to the appearance of the button, it always looks like it is on. Maybe I just don't have a bad profile?
I know it is a bit squirrely, but let's go over it again.
The light will go out when you change to a file that does not support a conversion, such as BMP or GIF.
Give that a try. Put a dot in the BMP or GIF hole as if you wanted to make one. The light goes out.
The screen snap sign I showed was what you will see if you try to use a profile that Qimage or Windows does not support like a Grayscale or CMYK.
That sign is saying, Hey Dumbo, that profile wont work so I am ignoring it. I'll make the copy but no conversion.
I hope that is better.
Fred