Description of problem: Downloading the most recent po file for libreport from transifex, it contains this message: #: ../src/plugins/abrt-screencast:87 #, c-format msgid "Encoding: {0!s}% complete" msgstr "" That is not a c-format message. But since the comment says so, if I add a translation tools will complain about my translation. Searching I found bug 888884 which mentioned this problem and another. That bug was resolved in February, but it seems the problem has reappeared.
Thank you for the report. abrt-screencast has been deprecated and has been replaced by fros. The tool has been dropped in libreport-2.1.7, but please feel free to report any further bugs you find.