So I just bought The Longest Journey and it won't start when I press Play in Galaxy. Anyone else having this problem?

Galaxy is still in beta and many of its basic funcionalities are still in development, so I wouldn't recommend trying to use it as if it was full-fledged -- which it isn't. Some games are not yet 100% Galaxy-compatible, and I say that whenever you come across an issue like this with any game, just run it the 'traditional' way, by downloading and installing it manually outside Galaxy and launch it via the shortcut, Some games have been known to work properly with Galaxy just as long as you don't download and install them using the client.

It actually "starts" by opening a small startup configuration window which just so happens to likely be hidden under the Galaxy window (it doesn't pop up) and not showing up in windows taskbar. Minimize Galaxy and any other windows and you should see it.