Crash When Playing .dem

[SpiderPig]

Hi,

When I try to play a .dem file in game it loads for about 3 secs then crashes an error comes up on screen but i cant see it so i have to hit "enter" to quit the game. This is really annoying does anyone have a solution for this?

edit: heres the error i think its todo with how the memory is read?

 

[omlette]

I get no error; the game just crashes back to the desktop