A new Gamestudio update is available for a public beta test:

http://server.conitec.net/down/gstudio8_setup.exe

This is an interim release between 8.40 and 8.50. A list of all changes can be found here:

http://manual.3dgamestudio.net/newfeatures8.htm

Install the update over your Gamestudio 8.40 version. Please report any problems to the bug forum.