https://sourceforge.net/apps/trac/sourceforge/ticket/21047
I uploaded a bmp file as a screen shot. When I uploaded it, it didn't do anything, and never gave me an error.
I think you should specify the acceptable file formats somewhere on the upload site, or have a filter on the open file dialog to choose the file to upload.
He uploaded via Admin -> Screenshots on an allura project.
bump
This issue has a merge request now
Merged in https://forge-allura.apache.org/p/allura/git/merge-requests/281/