During the Maximum Year, preflare and preeruptive phenomena have been observed which give a new idea on the association of eruptive prominences and coronal transients. The propagation of a C IV brightening through a prominence is related to the onset of a
MHD wave. It is followed by the activation of the prominence and its eruption some two hours later. A coronal transient is observed above 1.6 Rs. It is argued that the eruption of the prominence is
the result of perturbations in the magnetic field configuration initiated by the MHD waves. The consequence would be that more generally the primary initiation of the eruption may happen up to
several hours before the rlse of the prominence.