I too have a problem with American Choppers not playing on catch up, all I get is the loading symbol come up, or maybe the occasional advert, but no sign of the programme. Please sort this Now TV before my husband goes out of his mind!!!
FYI. I have just tried American Chopper again (S10, e5), and it is streaming as I type this message. ... 19:42. (NowTV box ... Black).
It could be to do with timing, or something has been fixed, or just another one of those things.