Hi,

shouldn't UnixProcess>>unregisterChildProcess:
removeKey: anOSProcess pid
instead of:
removeKey: self pid?

There are no senders of this message but at least with this change I can 
get rid of the instances of ExternalUnixOSProcess my problem from my 
other post.

Which still leaves the question if reusing one ExternalUnixOSProcess 
would be more appropriate.

Cheers,

Herbert