in reply to
ActiveState using a SOAP server for PPM?
Usually the ActiveState installation comes with all the packages that are required, which includes libnet.. Perhaps you don't have all of it installed ?
It might be a transient error, maybe you should retry again in a while.. if that doesn't work, go to the ActiveState module archives and try installing libnet manually.. ie: download the binary, and untar/ungz and type in "ppm install <modulename>.ppd"
Update:Yes, ActiveState PPM uses Soap::Lite, but this is just for network transport of information, you don't need to know it..