xavier, can you reproduce this bug ?
this is the batch which does not works

echo <ftp://test-debit.free.fr/image.iso> > goodlist.txt
echo <ftp://speedtest1.dyndns.org/image.iso> >> goodlist.txt
echo <ftp://speedtest2.dyndns.org/image.iso> >> goodlist.txt
echo <ftp://speedtest3.dyndns.org/image.iso> >> goodlist.txt
echo <ftp://speedtest4.dyndns.org/image.iso> >> goodlist.txt
httrack.exe --debug-ratestats --list goodlist.txt -%%! --max-time=130
-qwH1c32T60Bds0f2%%f0C0R30eO spidtest > nul

nota: -%%! is for windows it is in fact -%!
same thing for %%f who is in fact %f