Checked & double-checked: order of creation does NOT matter on ixus70
1. Formatted card (32M Canon) on computer, named it CANON_DC
2. copied a valid DCIM (with 100CANON + 1 pic & CANONMSC subdirs) + a valid CHDK
3. start cam with card, pic shows; after CHDK start (via PS.FIR) both CHDK and DCIM
show as "<dir>" in file browser
4. rename card in computer to "DCIM"
5. start cam with card -> "No Image !"; after CHDK start (via PS.FIR) DCIM shows as file with size 0
6. Reformat card, this time as DCIM
7. copied a valid DCIM (with 100CANON + 1 pic & CANONMSC subdirs) + a valid CHDK
8. start cam with card -> "No Image !"; after CHDK start (via PS.FIR) DCIM shows as file with size 0
9. rename card in computer to "CANON_DC"
10. start cam with card, pic shows; after CHDK start (via PS.FIR) both CHDK and DCIM
show as "<dir>" in file browser
11. added (on the computer) a folder called "CANON_DC" containing a dummy.txt
12. start cam with card, then start CHDK: filebrowser shows CANON_DC as file with size 0
wim