Page saver extension could not save image (Firefox 2.0.0.11& Page saver basic 1.7)

When I tried to save the page image by Pearl Crescent Page Saver Basic v1.7, I did not see the 'save page image' window as before but the 'location of file to attach to citation' window.

The normal condition was as follow:

I found the incompatible problem was caused from Endnote 0.6.1. The problem will solved after I disabled one of them.