the error is just telling you that it failed to load the driver for a device you almost certainly don’t have in your computer. the first “error” has nothing to do with the next problem.
what version of fog are you using? (an svn release, 1.0.0, 1.0.1)
what kind of download task did you use? (unicast or multicast)
what is the image type?
the more details you give, the more likely we can help you.
btw, those links are not work as direct links to images.

Upgrade to 1667 and let me know if you still have issues.

Thank you,

Is javascript enabled on your browser? Did you by chance change screens and received that message? All that means is it was unable to update the information. If you refreshed and still receive the message please let me know, but all seems to be working fine from my side.

IF you are using SVN it is located in your svn repository
trunk/FOGCrypt

As of revision 1556 it can be downloaded via the client page
<FOGSERVERIP>/fog/client/

DNSMASQ can help with supplying the boot server and file name to multiple subnet, it may be something to think about.

Can you boot the computer into debug mode from FOG, run an fdisk -l, and then report the results here?