People have still been having problems with the controls. I can't reproduce these problems, so it's impossible for me to correct these problems without just releasing an update with some changes and hope that it works.
This version also has fixed the missing surface error a few people have had, and the handful of graphical hiccups GMStudio caused.
I hope that helps the controls for people, because otherwise I've got about no clue what to do. I've searched high and low via google for other people having this problem, but to no avail.
Installer: YourFileHost Download
Mirror: Mega Download
Stand-alone: YourFileHost Download