Hi Andrew!
did you change the name of your /web/server1/parameters/nsd.tcl to
/web/server1/parameters/server1.tcl?, remember to change nsd --> server1 in your case, I guess you are using nsd.tcl that is in site as example http://new.openacs.org/doc/openacs/nsd.txt to run your aolserver, for it is working ok,
hope this help you ;)