I'm also getting this exact same problem. I noticed there was a SMB update on Steam and I decided to give it a spin and the game freezes every time I complete a level. I even tried rebooting my PC but to no avail. I'm roughly 3/4 of the way through Chapter 4, and it's happened on every level i've tried, even when I try replaying levels.

I did notice that the occasional minor lag or hiccup I had when playing the game before has completely disappeared, so that was nice to see. Hopefully there can be a quick update to fix this new problem, because it's making the game kinda unplayable at the moment.

Thanks! I'm glad you like it.

I think I'm going to make ones of the other SMB characters as well. Dr. Fetus will be the biggest challenge, I think because there's no "glass" block in 3DDGH.

I'm sure nobody is playing this game anymore, but for anyone who might be, I decided to try and make a Meat Boy character for the game. It's just a first version, based off the 8 bit Meat Boy character. If you have any suggestions for improvements, please let me know. Also, you might enjoy this character more with the shield/swagger turned off.

Download Link: http://moonbooks.net/downloads/?did=586