The selected file oh_no.7z could not be uploaded. Only files with the following extensions are allowed: txt pdf v4p zip rar fx.
The CMS should accept .7z files, given the many recommendations to use 7-zip in favour of other archival applications (under the light of certain reported bugs).
also it should be possible to upload the same files to a contribution thread that are possible in a normal forum thread. sometimes it is necessary to add explanatory patches or file bug reports with a v4p