The old version of VersionSorter may cause the encoding error in file page.
There is no restriction for the lowest version of VersionSorter in Gemfile, so in current version (1.1.0) it will cause an encoding error when sorting Tags, which turns UTF-8 to ASCII, then trigger a encoding error in file page.
The problem encounter at line #95 (closed) in app/helpers/application_helper.rb https://github.com/Shanicky/gitlabhq/blob/master/app/helpers/application_helper.rb#L95 When we removed the sorting for tags, there is no encoding error in file page