The Giana’s Return Team is close to release a hotfix release for the recent v0.99.5. There was an obvious bug, which did not let you finish the game and other certain parts, because of a modified jumping behaviour.

Also the team is aware of a minor “stuck” problem, when the music loops: http://www.gianas-return.de/?p=619 – A solution is beeing worked on.

http://www.gianas-return.de/