Today we published another maintenance update for Merlin. It contains just one fix for Mac OS X 10.4 and is recommended for Merlin users working on such older OS X versions: The previous Merlin 2.7.8 version would not open any project file when running on Mac OS X 10.4.x

So don’t be surprised that after updating your Merlin version it will still obtain its 2.7.8 version numbering. This is not a bug, it’s a feature 😉