Need help understanding the Dave Hansen downloads available

The ones at:

In the /garmin/Lambertus/2011-07-31, there seems to be one entry for each size with no longitude information and a suspiciously small size. Is this an indication that the creation process failed…or…?

I think those directories and maps are created automatically and since I erroneously uploaded the 2011-07-31 version (which was published online for a short while) Dave’s scripts probably picked it up. The latest real version is 2011-07-29.