It is a problem in beta6. Remove by Background in a Control Block paints the background of the Netscape browser over the image's area. This is normally gray. Netscape 2.0Betas also have a major bug with printing. You can't in betas 4 and 5.
Continuous animations causes the printing process to go into loops that it never came out of.
Beta 6 solved this. Framed pages always come up without any images, even though you had the Auto Load Images option checked. I always had to activate each image icon separately by clicking on it. The answer to this is that for some reason Netscape requires that checked Auto Load images option to be Saved and Netscape exited and restarted in order for the Auto Load Images function to work within frames. I generally run Netscape with the Auto Load Image option unchecked and just check it temporarily if I need it.