Tried the script with the chest samples, and also with the following brain scans, relabeled 00001, 00002, etc.
http://en.wikipedia.org/wiki/File:Computed_tomography_of_human_brain_-_large.png

The script works!
When the script gets to the end, the highest number, it seems to keep reloading the last image, with label number incremented
higher each time.

- Brian

When I misspelled Brain00006 as Brian00006, it reloaded Brain00005 as 00006, and on the next load, loaded 00007. :-) (OK)