We have purchased the educational version of Game Maker Studio and are having a few issues with it:

Firstly, we keep getting a pop-up box with an error message, 'DTD is prohibited'. It also says, Line:1 <!DOCTYPE HTML PUBLIC "-W3C//DTD HTMLTo clear this, we just click ok, but it often pops back up.

Secondly, the useful 'tutorials' are not available to students. They do not have this option on their screens for some reason? This is something we really want to use with them, but only staff are able to get onto these at the moment.

Any help with these issues would be much appreciated. We have sent a couple of messages to YoYo games helpdesk but that was quite some time ago and we've heard nothing back.

Thanks, Natalie