How to avoid Pictures Turning into Big Red ‘X’:

This is a serious problem that many people are running into. It is due to a file size bug; when PowerPoint doesn't have enough memory to deal with the size of your file, the graphics get forever replaced with big red X images. If you can insert the pictures directly from PowerPoint (using Insert/Picture) as opposed to using copy/paste, the file size sometimes turns out to be much smaller (some applications create links and other exciting remnants when doing a paste operation). When saving and reopening these files, people find fewer problems. As for opening files which already have red crosses, Microsoft suggests closing the file WITHOUT saving (as saving would also save the red crosses), close all other programs to free up as much memory as possible, restart your computer, and finally reopen your file. This has been tested and it seems to work; problem is that almost everybody closes the file and saves it. In this case, you must manually reinsert the picture from its original source.