When I try to use zexy externals under Windows 98, installed from zexy-nt-1_1.zip, I get a raft of errors to the console. Opening the externals, I see that there are no connectors between objects.
For example, trying multiplex~ gives the messages:
error: multiplex~ : can't load abstraction inside itself
multiplex~ ...couldn't create error: multiplex~ : can't load abstraction inside itself
multiplex~ ...couldn't create mux~ ...couldn't create multiplex~.pd 1 0 8 0 <text->env~> connection failed multiplex~.pd 3 0 1 0 <sig~>text> connection failed multiplex~.pd 4 0 1 1 <sig~>text> connection failed multiplex~.pd 5 0 1 2 <sig~>text> connection failed multiplex~.pd 6 0 1 4 <sig~>text> connection failed multiplex~.pd 7 0 1 0 <gatom->text> connection failed