Ok…
This is a very strange behavior that I need to take a deep investigation because I really can’t understand it.
I’ve been using the same unattend.xml file for testing purposes for a long time, but…this weekend I’ve haded some hotfixes to the OS Packages section, via the MDT Workbench.
After updating my Deployment Point, I’ve started the installation and almost immediately after starting the deploy, I got an error called:
<code>ZTI ERROR – Unhandled error returned by ZTIPatches: Object required (424)</code>
Because the only thing I’ve done was the insertion of hotfixes I’ve took them all except one. The error persisted! A very strange thing…
Looking closer to the bdd.log, located on C:\Minint\SMSOSD\OSDLOGS\, I’ve noticed an error with something like:
<code>Invalid character (…)</code>
I’ve googled it a little and someone was having a similar problem because of the use of a Norwegian character. After a search on my unattend I’ve realized I was using the name of the enterprise where I work, with a special character:
Espírito instead of Espirito.
After updated my deployment point…here we go again…everything works fine! 
The really strange thing here it’s…why the hll does this just happened after adding hotfixes?
