This has been on the 'Tube for over a year, but I only just saw it: three excerpts from an unsold 1966 pilot for a Li'l Abner series, with the script credited to Al Capp himself. The producer, Howard Leeds, was at the beginning of a long and illustrious career of working on bad sitcoms, culminating in his creation of the worst of them all, Small Wonder. The pilot was made for NBC, which rejected it, and rejected it again when it was re-submitted the following year.
Abner is played by perennial not-quite-star Sammy Jackson; Jeannine Riley, who had just quit Petticoat Junction because she thought it wasn't letting her grow as an actress, wound up playing Daisy Mae, because that's so much better than playing a sexy blonde hick. Judy Canova is Mammy Yokum, and Robert Reed turns up.
It's not much of a show, and visually ugly even by the low standards of 1966 (visually speaking, there have been few worse times in television than just after every show switched to color). Though the idea of doing a Beverly Hillbillies type of show based on Li'l Abner must have seemed like a good bet, given how much Beverly Hillbillies borrowed from Capp. But with that show, like any hit sitcom, you liked the characters and wanted to hang out with them. Capp is a misanthrope and holds his characters in contempt, and that always comes through in any version of the story; I think one reason the musical version was the only successful adaptation is that the songs help to soften the characters and make them easier to like.