nancy - NancyFx won't serve static content (images) from a folder called '16x16' -

i have nancyfx (v0.21.1) web site of images held in subfolder of content folder, e.g.: /content/img/16x16/image.png

however, nancy won't serve image (yields 404). if change folder name else (/content/img/size16/image.png), nancy serve image.

not end of world (clearly), interested know why is?

what hosting using? tried using nancy.hosting.aspnet latest build (1.4.3) , works fine

0.21.1 on 2 years old , lot has changed during time. wouldn't surprised if there used encoding issue has been resolved since

if want figure out, recommend grab pdb files , step static content convention , see happening