Recent updates to the Gamemaker scripting program have fucked almost beyond repair the engines I've created.
The engine I wanted to use for my 7DRL, which I put together during last year's 7DRL, are now obsolete.
So I either use an archaic and unsupported program or I rebuild my engine with the new Gamemaker: Studio. I dislike either option. But it's better than learning the T-Engine or Python.
The good thing, I guess, is that my new engine will be a ton faster and more portable to everything (web, mac, windows, windows 8, android etc...)
It will also have an easily edited sprite sheet, which I wish every game had.
Still. I was looking at a very easy peasy 7DRL this year, about 3 days of work for a game my nieces could play. Now I'm looking at another 2-3 days to rebuild the engine. Lame.