Bits of Philly 7/30/78

[Macfan4life]

Is this 1978 tour when the band got shy about performing new material? I've heard both Chris and Stevie say (many years apart) that they learned not to do much new material because the audience did not know it. Was anyone there? Did Sisters go out with a thud? I really admire the band for doing music from an album they were working on. I just wonder if this is when those statements originated.