> -----snip------------
> /* ARexx script run before yam... */
> call addlib('rexxsupport.library',0,-30,0)
> if showlist(h,'AWNPIPE') then do
> address command
> 'assign AWNPIPE: dismount'
> 'assign AWNPIPE remove'
> end
> if showlist(h,'AWNPIPE') then say 'Error Removing AWNPipe: device'
> -----snip------------

In case you didn't notice i forgot the trailing colon : in the 'assign remove'
command
oops.
it should be...
'assign AWNPIPE: remove'