I can't get Finale 2014.5 to execute a ritardando tempo alteration in playback, I have tried using the default rit. tempo alteration, and also copying it and assiging various shapes to execute, but it doesn't make any difference. The playback tempo is completely unaltered. This is a simple piano and flute score. I have tried the various piano options in the score manager - the pianos that came with the Garritan Personal Symphony Orchestra 4 and 5 as well as the CFX concert grand. No effect on playback.

Operating system is Windows 8.1