Hi wiziple,
What about my remark @ http://picpick.wiziple.net/community/8183 ?
It's a real functionality problem.
I wonder why you answered http://picpick.wiziple.net/community/8180 but not that one.

PS.
Nicholas, forgive me to misuse your question for this comment.
I wanted a recent question to draw the attention.

Hi, Nicholas

You can change the auto-naming format used by Picpick simply editing your *.ini language file (saved in the language folder where you installed the program). To do so, you must edit that file (for instance, English.ini) using Notepad or other basic text editor, go to the line number 425 (aprox.), and change there the format you desire.

For instance, in the spanish translation (I'm the translator) the format I decided to use for auto-naming is "yyyy-mm-dd_(hh-nn-ss)" (without quotes and using parenthesis for the hour), and I did it in that way thinking in havig the files in a suitable order, as you have commented. Remember that you can edit that string, but must use valid characters (those accepted for the naming rules in Windows, so that colon or question mark are fobidden).

For the changes having effect, you don't need to restart Picpick. It's enough changing to another language and then selecting the one you were using.

Regards.