Cast on Crit With Desecrate didn't work out

Desecrate is suppose to produce corpses and to spread chaos cloud. But when i link it with Spectral Throw, Cast on Critical Strike and Detonate Dead, it only spreaded chaos cloud and produce no corpses at all.
I was expected it to produce the corpses so my Detonate Dead will explode it to do more damage.
When cast it without link, it works fine. But when I link with Cast on Critical Strike, it just work wrong.

The screen shots:


By the way, I'm not so good at English, so I'm sorry about that.