wavelab sonnox crash

Nearly every time I load the sonnox de clicker into wavelabs master section it crashes and also if it does not crash the sound it extremly bad.

Also if try to play an audio file before the image has been created wavelab crashes and task manager cant not close it.
using windows 7
dual core
1 gig ram
Wavelab 7 had same problem as recent update

Also running cubase 6 no problems