AddictiveD , Pro Tools Logic

[Vuts]

hello

quick question
i m using addictive drums in logic 8 on an Imac inter
without any problems - runs very smoothly
but..
when i open addictive drums in protools 7.4 in the same imac
i get the low cpu power message and i cant even play back a drum loop
i ve changed the playback engine settings, buffer size etc but it doesnt work

any ideas?
thanks