Acer 3810T - erecovery error - hdd config not set to factory default?

Hi I just bought an Acer 3810T with Win7 Home Premium 64bit preinstalled and reading that it's best to first use Acer Erecovery to create a recovery disk and driver dvd set, I did that successfully before installing any apps etc.

Now I updated Win7 with windows update and installed a few apps. Then tried to do a new Acer Erecovery disk and driver ste, but this time when I try to run backup i get message:

and the backup aborts ??

So I can no longer re-recreate a fresh set of recovery disks ??

 

Well i did an ALT+F10 system restore and can create recovery disks again. But wonder why i couldn't before ?