I think maybe you want those supplies and stimulus sources
in the circuit, since that's how you are choosing to declare
them (as elements, not statements). They seem to be not
getting found, as is. You might want to look at the spectre
final input file (I forget which but there is a series of them in
the run directory which is the ready-to-go complete netlist,
not what "display netlist" shows you in ADE). If your sources
are not showing up there then maybe you're talking to the
wrong end of the elephant.