Also the last one or two in my PicKit 3 list.
Be sure you have installed the latest "operating system" for the PicKit 3.
What I have is PK3FW_012633.jam (on the PicKit3 menu, at the bottom of tools is the Operating System choice)
The file was in my Program Files/Microchip/Pickit3 folder.
ps, if there is a newer version, I don't have it but would appreciate a link!