.TIFF Files With Program Not Working

I've been trying to associate .TIFF files with a program called PaperPort Image Viewer on one of my company's engineering computers. When I try to use the "Open With" function or the associate file type in Default Programs, the program does not populate in the window. I go and search for the executable for the program, select it and try to bring it into the window for acceptabel programs for the file extension, and it doesn't populate to the window. However, if I map a drive to the users computer, and try and associate the same file type with that same program from my machine, it populates into the window with no problems, once I find it in the file structure. Both machines are running Windows 7 Professional 64 bit. The engineering one is a Dell Precision 6700 and my machine is a Dell Latitude E4310 laptop.