Error 'Exit code = 0x240001'

Hi,

I have a problem with the installation with WSUS 2.0 in some servers. The
problem is that servers download the fixes and in the event viewer (System) I
can read that the installation is scheduled for an specific day, which is the
day I planned.

This is the text:

Installation Ready: The following updates are downloaded and ready for
installation. This computer is currently scheduled to install these updates
on miércoles, 28 de noviembre de 2007 (date is in Spanish, but it's correct)
at 3:00:
- Security Update for Microsoft XML Core ...

The problem is that the updates doesn't appear to install manually and the
day which was planned (November 28th at 3:00h) doesn't occur anything.

I've found in the windows update log (in C:\Windows) this error:

'Exit code = 0x240001', but it doesn't seem to be enought to fins a
solution. Could anybody help me ?

Thanks in advanced !

Krli.