That show was a disaster to begin with... apparently, Silverman saw Pink Lady perform on the tail-end of a newsprogram, and decided right then and there to give them their own show, and turned to the Kroffts to produce it.
Seriously, that's how it happened.
They were bigger in Japan than the Beatles were anywhere, but virtually unheard of here in the U.S., yet Silverman felt they had potential to be given their own American show.
Like I said in another thread, I just recently discovered Canadian jazz singer Emilie-Claire Barlow, so that'd be like me giving her her own show down here (well, okay, apparently Americans know her as a voice actress, but whatever).
Silverman even told Sid and Marty they spoke English, but when they held a meeting with them to talk about the show, guess what? They didn't understand a word of English!