Removing black dots? HELP D:

[Fzilm]

http://www.pasteall.org/blend/13784 down load this to see what im talking about

the image looks fine in it default position but if you move or rotate the object at all these trianges filled with diffrent ammounts of black dots apear

help

[Sanctuary]

The problem is that you have a face overlapping another :

Delete this face and redo it like this :

[Fzilm]

thanks that worked