Update SpybotS&D and do scan in same Scheduled Task

Do you have a question? Post it now! No Registration Necessary.  Now with pictures!

I used SpybotS&D's task scheduler, which basically served as the
impetus for me to learn all about Windows XP Scheduled Tasks. At
first, I set up a schedule task to update SpyBotS&D, followed by a 2nd
Scheduled Task to scan the hard drive (a much longer task) 30 minutes
after the update. I gave 30 minutes leeway because I could not
anticipate the things that might delay the update. However, I found
that DOS commands could be concatenated using the ampersand symbol. So
I changed the following two tasks to one task:

    * "C:\Program Files\Spybot - Search & Destroy\SDUpdate.exe" /
autoupdate /autoclose
    * "C:\Program Files\Spybot - Search & Destroy\SpybotSD.exe" /

The single concatenated command is:

    "C:\Program Files\Spybot - Search & Destroy\SDUpdate.exe" /
autoupdate /autoclose & "C:\Program Files\Spybot - Search & Destroy

If it worked, this compound command has the benefit that it doesn't
have to blindly wait for 30 minutes between the update and the scan.
This leaves more time throughout the night for scheduling of other
malware scanners. Furthermore, if for some reason the update is
delayed for more than 30 minutes, the scan still won't happen before
the update.

However, it doesn't seem that this compound command is working. The
update happens so fast that there is no "Running" indicator in the
Scheduled Task folder, and it doesn't show up in the task manager. In
itself, this is fine (assuming that it ran). However, it doesn't seem
that the scanning part of the compound command works because (again)
it doesn't show as Running in the Scheduled Task folder and doesn't
show up in the Task Manager. Scanning is a lengthy process, and it
*should* show up in both these ways -- it shows up when it isn't
folded into the compound command.

I've reverted back to not having a compound command, but I was
wondering if someone could shed some light on the reason why the scan
can't be hitched on to the tail of the update command, as I have tried
to do in the compound command?

I am running Windows XP SP3.

Site Timeline