What kind of sequence are you running it with? Just make sure thats all good and no duplicate channel assignments, etc.
I recall in LOR software that if you put in a channel twice ... with one occurance saying "on" and the other duplicate channel saying "off" ... it would still be "off" ... and then you could sometimes go on a wild goose chase wondering whats wrong.
I doubt its this, but trying to think outside the box for you.
Also, your only use SS Nodes, not mixing with modules or any other type off SS items, right? The other 34 node strings are nodes, not modules ,right?