Fermentation issue?

[deason]

After a week i've got no sign of the yeast foaming and fermenting.

Its a coopers stout with some treacle...

Has the yeast been killed off and its useless?

 

[RM-MN]

No, your yeast are doing just what they are supposed to do. http://www.brewgeeks.com/the-life-cycle-of-yeast.html

 

[flars]

What is the specific gravity of the wort?