hi Ordan,
Max knows, latest always available at Gena and Win7PE SE servers
Also,
I do not know if wb relevant incompatibilities still exists,
try replacing
If,Not,%runfrom%,Equal,Rundefault,Call,VariableToMacro,%runfrom%,True
-->
If,Not,%runfrom%,Equal,Rundefault,%runfrom%,True
see if things will work on Leopard