I have watched all of the videos Mark Bremmer did on this subject and have copied the steps to the letter, but when i hit drape Carrara doesnt do anything, it seems like the hair is about to fall then nothing. 

Steps i followed 

drag hair onto object (in this case a figure) 
painted the area i wanted the hair to be on 
added guide hairs 
clicked drape 

but nothing, is there any other step or trick i need to do, i cant even do the above in C8 beta as i get an I/O error (get a lot of them in C8 )