Yes it is in the preview.
The value of Preview mode is HTTP.
The value of Preview Browser is (default) ** that would be IE 9.
demo projects Space Blaster or Ghost Shooter freeze up in the Preview at these settings after 15 to 30 seconds.
I tried switching the value of Preview mode to File. And The value of Preview Browser is still at (default) ** that would be IE 9.
The demo projects Space Blaster and Ghost Shooter freeze up at these settings too.
If I change the Preview Browser to Chrome and the Preview mode to HTTP.
The preview works fine. So it is just IE 9 having the problem with the preview.
I can see your point about a problem with IE 9 but why then when I export the project to the internet and use IE 9 it works fine?
And I will update to R61 and see if that helps and let you know.