[imp] Another spamassasin question

[Thomas O'Brien]

Hello,

Using:
Horde: 3.0-cvs 
Imp: 4.0-cvs
Ingo: 2.0-cvs
Turba: 2.0-cvs
Kronolith: 2.0-cvs 
Mnemo: 2.0-cvs 
Nag: 2.0-cvs 
Passwd: 2.2-cvs 

Installed and tested SpamAssasin using docs from
http://www.openhandhome.com/howtosa260.html

Set
$conf['spam']['reporting'] = true;
$conf['spam']['email'] = '';
$conf['spam']['program'] = \perl\bin\spamassasin -r;

in \imp\conf.php

Seeing
Warning: popen(\perl\bin\spamassassin -r,w): No error in
C:\Inetpub\sharedroot\horde\imp\message.php on line 154

Warning: fwrite(): supplied argument is not a valid stream resource in
C:\Inetpub\sharedroot\horde\imp\message.php on line 155

Warning: pclose(): supplied argument is not a valid stream resource in
C:\Inetpub\sharedroot\horde\imp\message.php on line 156

Warning: Cannot modify header information - headers already sent by (output
started at C:\Inetpub\sharedroot\horde\imp\message.php:154) in
C:\Inetpub\sharedroot\horde\imp\templates\common-header.inc on line 3

Warning: Cannot modify header information - headers already sent by (output
started at C:\Inetpub\sharedroot\horde\imp\message.php:154) in
C:\Inetpub\sharedroot\horde\imp\templates\common-header.inc on line 4

Any help would be appreciated.

Thomas